Definition of


When two quantities always have the same size in relation to each other. In other words they have the same ratio.

Example: A rope's length and weight are in proportion. When 20m of rope weighs 1kg, then:
• 40m of that rope weighs 2kg
• 200m of that rope weighs 10kg

Another example: The lengths of these two shapes are proportional (one shape's length is always twice as large as the other)


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