Finding the Third Proportional to 644 and 817
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Solution
The third proportional to 644 and 817 is: 1,036.47
Step by Step Solution
- Step 1: Write the proportion equation
644 : 817 = 817 : x - Step 2: Convert to fraction form
644/817 = 817/x - Step 3: Cross multiply
644x = 817 × 817 - Step 4: Simplify right side
644x = 667,489 - Step 5: Solve for x
x = 667,489/644 - Step 6: Final answer
x = 1,036.47
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Why These Related Problems?
These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.