8.1 Exploring Ratio & Proportion

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Presentation transcript:

8.1 Exploring Ratio & Proportion Power Standard #4 Use the properties of similarity and the concepts of ratio and proportion to solve problems (1.1.4) Power Standard #12 Use the characteristics and properties of right triangles to solve problems (1.3.1, 1.3.2)

Ratio – Comparison of two quantities measured in the same units The distance to Centralia is about 20 miles compared to about 100 miles to Vancouver. C:V = 1:5 C to V = 1 to 5 Ratios in class: 1) girls to boys, 2) boys to girls, 3) girls to students _____ , ______ , ______

Proportion – Two or more ratios combined with an equal sign = solve proportions – product of extremes equal to product of the means. means a:b = c:d extremes

8.1 Exploring Ratio & Proportion

2/16 O.E. What is the difference between a ratio and a rate? . Which terms are the means? Find the average (arithmetic mean) of 16 and 36.