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Finding the Fourth Proportional to 534.38, 800.24 and 520.61

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Solution

The fourth proportional to 534.38, 800.24 and 520.61 is: 779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.38 : 800.24 = 520.61 : x
  2. Step 2: Convert to fraction form
    534.38/800.24 = 520.61/x
  3. Step 3: Cross multiply
    534.38x = 800.24 × 520.61
  4. Step 4: Simplify right side
    534.38x = 416,606.34
  5. Step 5: Solve for x
    x = 416,606.34/534.38
  6. Step 6: Final answer
    x = 779.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.