- the comparative relation between parts, things, or elements with respect to size, amount, degree, etc.; ratio
- a part, share, or portion, esp. in its relation to the whole; quota
- relationship between parts or things; esp., harmonious, proper, or desirable relationship; balance or symmetry
- size, degree, or extent relative to a standard
- [
*pl.*] dimensions: a building of large*proportions* - Math.
- an equality between ratios; relationship between four quantities in which the quotient of the first divided by the second is equal to that of the third divided by the fourth (Ex.: 6 is to 2 as 9 is to 3)also called geometrical proportion
- rule of three

- an equality between ratios; relationship between four quantities in which the quotient of the first divided by the second is equal to that of the third divided by the fourth (Ex.: 6 is to 2 as 9 is to 3)

Origin of proportion

Middle English*proporcioun*from Middle French

*proporcion*from Classical Latin

*proportio*from

*pro*, for +

*portio*, part: see portion

- to cause to be in proper relation, harmony, or balance: to
*proportion*the punishment to the crime - to arrange the parts of (a whole) so as to be harmonious or properly balanced