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Finding the Fourth Proportional to 521.07, 781.64 and 232.53

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Solution

The fourth proportional to 521.07, 781.64 and 232.53 is: 348.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.07 : 781.64 = 232.53 : x
  2. Step 2: Convert to fraction form
    521.07/781.64 = 232.53/x
  3. Step 3: Cross multiply
    521.07x = 781.64 × 232.53
  4. Step 4: Simplify right side
    521.07x = 181,753.59
  5. Step 5: Solve for x
    x = 181,753.59/521.07
  6. Step 6: Final answer
    x = 348.81

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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.