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Finding the Fourth Proportional to 234.75, 351.92 and 165.90

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Solution

The fourth proportional to 234.75, 351.92 and 165.90 is: 248.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.75 : 351.92 = 165.90 : x
  2. Step 2: Convert to fraction form
    234.75/351.92 = 165.90/x
  3. Step 3: Cross multiply
    234.75x = 351.92 × 165.90
  4. Step 4: Simplify right side
    234.75x = 58,383.94
  5. Step 5: Solve for x
    x = 58,383.94/234.75
  6. Step 6: Final answer
    x = 248.71

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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.