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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Ratio
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A quotient of two numbers
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https://o.quizlet.com/vgQp9g1Ii9PMJg-JNk30Yw_m.png
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Proportion
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An equation stating that two or more ratios are equal (a:b=c:d) or as fractions.
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https://o.quizlet.com/sHrVq78yPdxww74ECVbO1Q_m.jpg
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In a Proportion
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first and fourth terms (a and d)are extremes, second and third terms (b and c)are means.
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Theorem 59(Means-Extremes Theorem)
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In a proportion, the product of the means is equal to the product of the extremes.
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Theorem 60(Means-Extremes Ratio Theorem)
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If the product of a pair of nonzero numbers is equal to the product of another pair of nonzero numbers, then either pair of numbers may be made the extremes and the other pair the means, of a proportion.
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If 5:3=7:x, what is x?
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4 1/5
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Definition of ratio and proportion
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If the means in a proportion are equal, either the mean is called the geometric mean or the mean proportional between the two extremes.
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