Finding the Third Proportional to 66.50 and 74.50
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Solution
The third proportional to 66.50 and 74.50 is: 83.46
Step by Step Solution
- Step 1: Write the proportion equation
66.50 : 74.50 = 74.50 : x - Step 2: Convert to fraction form
66.50/74.50 = 74.50/x - Step 3: Cross multiply
66.50x = 74.50 × 74.50 - Step 4: Simplify right side
66.50x = 5,550.25 - Step 5: Solve for x
x = 5,550.25/66.50 - Step 6: Final answer
x = 83.46
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Why These Related Problems?
These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.