Finding the Third Proportional to 478 and 626
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Solution
The third proportional to 478 and 626 is: 819.82
Step by Step Solution
- Step 1: Write the proportion equation
478 : 626 = 626 : x - Step 2: Convert to fraction form
478/626 = 626/x - Step 3: Cross multiply
478x = 626 × 626 - Step 4: Simplify right side
478x = 391,876 - Step 5: Solve for x
x = 391,876/478 - Step 6: Final answer
x = 819.82
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These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.