Proportionality (noun)

The relationship between two things, especially the relationship between the size, amount, or degree of one thing and another.

Origin:

Late 16th century: from medieval latin proportionalitas, from latin proportionalis 'in proportion' (see proportional).

Examples:

1. Proportionality is important in many areas, including architecture, art, and design.
2. The proportionality of the ingredients is critical in baking, as the wrong ratios can result in a failed recipe.
3. The proportionality between the size of the body and the size of the head is important for a pleasing appearance in many species.
4. In mathematics, proportionality is often expressed using the symbol '='.
5. The principle of proportionality is often applied in law, requiring that the punishment fit the crime.