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Finding the Fourth Proportional to 234.11, 351.32 and 89.84

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Solution

The fourth proportional to 234.11, 351.32 and 89.84 is: 134.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.11 : 351.32 = 89.84 : x
  2. Step 2: Convert to fraction form
    234.11/351.32 = 89.84/x
  3. Step 3: Cross multiply
    234.11x = 351.32 × 89.84
  4. Step 4: Simplify right side
    234.11x = 31,560.38
  5. Step 5: Solve for x
    x = 31,560.38/234.11
  6. Step 6: Final answer
    x = 134.81

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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.