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Finding the Fourth Proportional to 331.29, 456.71 and 232.74

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Solution

The fourth proportional to 331.29, 456.71 and 232.74 is: 320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.29 : 456.71 = 232.74 : x
  2. Step 2: Convert to fraction form
    331.29/456.71 = 232.74/x
  3. Step 3: Cross multiply
    331.29x = 456.71 × 232.74
  4. Step 4: Simplify right side
    331.29x = 106,293.52
  5. Step 5: Solve for x
    x = 106,293.52/331.29
  6. Step 6: Final answer
    x = 320.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.