na-adjective
proportional
Used as a na-adjective in technical, mathematical, or design contexts to describe something that is proportional or proportionate.
このグラフはプロポーショナルな関係を示している。
This graph shows a proportional relationship.
デザインではプロポーショナルなバランスが重要だ。
In design, proportional balance is important.
The native Japanese noun meaning 'proportion' or 'proportionality'. プロポーショナル is a more technical or stylistic loanword used as a na-adjective.
Borrowed from English 'proportional'.