Finding the Third Proportional to 361 and 641
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Solution
The third proportional to 361 and 641 is: 1,138.17
Step by Step Solution
- Step 1: Write the proportion equation
361 : 641 = 641 : x - Step 2: Convert to fraction form
361/641 = 641/x - Step 3: Cross multiply
361x = 641 × 641 - Step 4: Simplify right side
361x = 410,881 - Step 5: Solve for x
x = 410,881/361 - Step 6: Final answer
x = 1,138.17
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These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.