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Finding the Third Proportional to 337.50 and 721.81

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Solution

The third proportional to 337.50 and 721.81 is: 1,543.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.50 : 721.81 = 721.81 : x
  2. Step 2: Convert to fraction form
    337.50/721.81 = 721.81/x
  3. Step 3: Cross multiply
    337.50x = 721.81 × 721.81
  4. Step 4: Simplify right side
    337.50x = 521,013.29
  5. Step 5: Solve for x
    x = 521,013.29/337.50
  6. Step 6: Final answer
    x = 1,543.74

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.