Proportional reasoning relies on ratios. A key idea is that every ratio can be written as a fraction, and every fraction can be thought of as a ratio. Example: I make just 2/3 as much as my husband – this is thinking about it as a fraction.
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Having a due proportion, or comparative relation; being in suitable proportion or degree; as, the parts of an edifice are proportional., Relating to, or securing, proportion., Constituting a proportion; having the same, or a constant, ratio; as, proportional quantities; momentum is proportional to quantity of matter., Any number or quantity in a proportion; as, a mean proportional., The combining weight or equivalent of an element.
Yes, they are in the proportion of the proportion that they form!
The proportional plan is where electors are awarded to presidential candidates in direct proportion to the # of votes they got.
A percent is a proportion with the denominator equalling 100.
Any two non-zero quantities are always proportional. If the two quantities are X and Y, they are proportional to X/Y.