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Finding the Fourth Proportional to 539.17, 748.01 and 519.73

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Solution

The fourth proportional to 539.17, 748.01 and 519.73 is: 721.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.17 : 748.01 = 519.73 : x
  2. Step 2: Convert to fraction form
    539.17/748.01 = 519.73/x
  3. Step 3: Cross multiply
    539.17x = 748.01 × 519.73
  4. Step 4: Simplify right side
    539.17x = 388,763.24
  5. Step 5: Solve for x
    x = 388,763.24/539.17
  6. Step 6: Final answer
    x = 721.04

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.