Definition of Propartional
Pro*por"tion*al (?), a. [L.
proportionalis: cf. F. proportionnel.]
1. Having a due proportion, or comparative
relation; being in suitable proportion or degree; as, the parts of an
edifice are proportional. Milton.
2. Relating to, or securing, proportion.
Hutton.
3. (Math.) Constituting a proportion;
having the same, or a constant, ratio; as, proportional
quantities; momentum is proportional to quantity of
matter.
Proportional logarithms, logistic logarithms.
See under Logistic. -- Proportional
scale, a scale on which are marked parts proportional to
the logarithms of the natural numbers; a logarithmic scale. --
Proportional scales, compasses,
dividers, etc. (Draughting), instruments used in
making copies of drawings, or drawings of objects, on an enlarged or
reduced scale.
Pro*por"tion*al, n. 1.
(Math.) Any number or quantity in a proportion; as, a mean
proportional.
2. (Chem.) The combining weight or
equivalent of an element. [Obs.]
- Webster's Unabridged Dictionary (1913)
- At a constant ratio (to). Two magnitudes (numbers) are said to be proportional if the second varies in a direct relation arithmetically to the first.
Quotation
* The stopping distance is proportional to the square of the speed of the vehicle. — at physicsclassroom.com.
- In proportion (to), proportionate. More common in US than UK.
Quotation
* ...how much of the Bush administration's immediate post-9/11 emphasis on Iraq was appropriate and proportional to the overall picture of terrorism — Wikipedia:Foreign_policy_of_the_George_W._Bush_administration retrieved 24 Jan 2005.
- The Nuttall Encyclopedia
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