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Finding the Fourth Proportional to 574.29, 862.65 and 487.62

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Solution

The fourth proportional to 574.29, 862.65 and 487.62 is: 732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.29 : 862.65 = 487.62 : x
  2. Step 2: Convert to fraction form
    574.29/862.65 = 487.62/x
  3. Step 3: Cross multiply
    574.29x = 862.65 × 487.62
  4. Step 4: Simplify right side
    574.29x = 420,645.39
  5. Step 5: Solve for x
    x = 420,645.39/574.29
  6. Step 6: Final answer
    x = 732.46

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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.