Finding the Third Proportional to 391 and 626.50
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Solution
The third proportional to 391 and 626.50 is: 1,003.84
Step by Step Solution
- Step 1: Write the proportion equation
391 : 626.50 = 626.50 : x - Step 2: Convert to fraction form
391/626.50 = 626.50/x - Step 3: Cross multiply
391x = 626.50 × 626.50 - Step 4: Simplify right side
391x = 392,502.25 - Step 5: Solve for x
x = 392,502.25/391 - Step 6: Final answer
x = 1,003.84
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These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.