Proportion
Definition of Proportion
Pro`por´tion n.  1.    1.  The relation or adaptation of one portion to another, or to the whole, as respect magnitude, quantity, or degree; comparative relation; ratio; as, the proportion of the parts of a building, or of the body.The image of Christ, made after his own proportion.  Ridley.   2.  Harmonic relation between parts, or between different things of the same kind; symmetrical arrangement or adjustment; symmetry; as, to be out of proportion.   3.  The portion one receives when a whole is distributed by a rule or principle; equal or proper share; lot.   4.  A part considered comparatively; a share.   5.  (Math.) The equality or similarity of ratios, especially of geometrical ratios; or a relation among quantities such that the quotient of the first divided by the second is equal to that of the third divided by the fourth;  called also geometrical proportion, in distinction from arithmetical proportion, or that in which the difference of the first and second is equal to the difference of the third and fourth.   6.  The rule of three, in arithmetic, in which the three given terms, together with the one sought, are proportional.Harmonical proportion  a relation of three or four quantities, such that the first is to the last as the difference between the first two is to the difference between the last two; thus, 2, 3, 6, are in harmonical proportion; for 2 is to 6 as 1 to 3. Thus, 24, 16, 12, 9, are harmonical, for 24:9::8:3. 
 v. t.  1.  To adjust in a suitable proportion, as one thing or one part to another; as, to proportion the size of a building to its height; to proportion our expenditures to our income.   2.  To form with symmetry or suitableness, as the parts of the body.   3.  To divide into equal or just shares; to apportion. 
Related Words
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