[p_ɹ_ə_p_ˈɔː_ʃ_ə_n_əl], [pɹəpˈɔːʃənə͡l], [pɹəpˈɔːʃənəl]
Definitions of proportional

increasing as the amount taxed increases

one of the quantities in a mathematical proportion

properly related in size or degree or other measurable characteristics; usually followed by ` to'; " punishment oughtt to be proportional to the crime"; " earnings relative to production"

Proportionally.

Having a due proportion, or comparative relation; being in suitable proportion or degree; as, the parts of an edifice are proportional.

Relating to, or securing, proportion.

Constituting a proportion; having the same, or a constant, ratio; as, proportional quantities; momentum is proportional to quantity of matter.

Any number or quantity in a proportion; as, a mean proportional.

Having, or being in, due or suitable relation; having a ratio or rate invariable under given conditions.

A quantity or number having a certain ratio to another.

Having a due proportion: relating to proportion: ( math.) having the same or a constant ratio.

( math.) A number or quantity in a proportion.

PROPORTIONALITY.

Having, or relating to, proportion.

Being in due proportion; relating to proportion. proportionate.

Having a due comparative relation; being in suitable proportion; having the same ratio.

A quantity proportional. Mean proportional, of two quantities, the square root of their products.

Being in proportion; having a due comparative relation; having the same ratio.

A number or quantity in proportion.
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Usage examples for proportional

Owing to the reduced dosage, slight proportional fluctuations in the dosage do not produce the same variations in the amount of free chlorine which is the usual cause of complaints. – Chlorination of Water by Joseph Race

The oxidations at the cells are, therefore, under such control that the quantity of kinetic energy supplied to the body as a whole, and to the different organs, is proportional to the work that is done. – Physiology and Hygiene for Secondary Schools by Francis M. Walters, A.M.

Eudoxus and Archytas were the first who began to treat of this renowned science of mechanics, cleverly illustrating it, and proving such problems as were hard to understand, by means of solid and actual instruments, as, for instance, both of them resorted to mechanical means to find a mean proportional, which is necessary for the solution of many other geometrical questions. – Plutarch's Lives, Volume II by Aubrey Stewart & George Long

A plan employed in several other states likewise aims to give each political party representation proportional to the number of votes cast by the party, regardless of whether the number is a minority or a majority. – Problems in American Democracy by Thames Ross Williamson

The other involves both a return to the scrutin de liste and the adoption of a scheme of proportional representation. – The Governments of Europe by Frederic Austin Ogg

John Stuart Mill's advocacy of Thomas Hare's system of proportional representation brought back to my mind Rowland Hill's clause in the Adelaide Municipal Bill with wider and larger issues. – An Autobiography by Catherine Helen Spence

Whether representation in your legislature is proportional to population. – Community Civics and Rural Life by Arthur W. Dunn

Domesticated animals alone afford the opportunity of ascertaining the proportional numbers at birth; but no records have been specially kept for this purpose. – The Descent of Man and Selection in Relation to Sex, Vol. I (1st edition) by Charles Darwin

The yield of any crop is not directly proportional to the amount sown, unless all factors contributing to germination are alike. – DryFarming by John A. Widtsoe

He took off one or two more distances, and on comparing them with the proportional distances on the ordnance map, found them in every case as nearly correct as could be expected. – The Mystery of 31 New Inn by R. Austin Freeman

14. What is the nature and purpose of proportional representation? – Problems in American Democracy by Thames Ross Williamson

You may wonder how I brought in proportional representation, but I managed it. – An Autobiography by Catherine Helen Spence

After a little practice you should produce a circular swing with a diameter of at least eight inches; but your success will be directly proportional to the exclusiveness of your thought and to your efforts to hold the pencil still. – The Practice of Autosuggestion by C. Harry Brooks

And after all, how are the partisans of proportional beauty agreed amongst themselves about the proportions of the human body? – The Works of the Right Honourable Edmund Burke, Vol. I. (of 12) by Edmund Burke