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Finding the Fourth Proportional to 232.11, 347.92 and 77.89

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Solution

The fourth proportional to 232.11, 347.92 and 77.89 is: 116.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.11 : 347.92 = 77.89 : x
  2. Step 2: Convert to fraction form
    232.11/347.92 = 77.89/x
  3. Step 3: Cross multiply
    232.11x = 347.92 × 77.89
  4. Step 4: Simplify right side
    232.11x = 27,099.49
  5. Step 5: Solve for x
    x = 27,099.49/232.11
  6. Step 6: Final answer
    x = 116.75

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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.