Math and Arithmetic

What is a proportion?



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  1. A part considered in relation to the whole.
  2. A relationship between things or parts of things with respect to comparative magnitude, quantity, or degree: the proper proportion between oil and vinegar in the dressing.
  3. A relationship between quantities such that if one varies then another varies in a manner dependent on the first: "We do not always find visible happiness in proportion to visible virtue" (Samuel Johnson).
  4. Agreeable or harmonious relation of parts within a whole; balance or symmetry.
  5. Dimensions; size. Often used in the plural.
  6. Mathematics A statement of equality between two ratios. Four quantities, a, b, c, d, are said to be in proportion if a/b = c/d.


A porportion is a size of something. For example, smaller or bigger porportions of a meal. Or blowing a situation out of porportion.