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Finding the Fourth Proportional to 234.47, 351.31 and 165.89

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Solution

The fourth proportional to 234.47, 351.31 and 165.89 is: 248.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.47 : 351.31 = 165.89 : x
  2. Step 2: Convert to fraction form
    234.47/351.31 = 165.89/x
  3. Step 3: Cross multiply
    234.47x = 351.31 × 165.89
  4. Step 4: Simplify right side
    234.47x = 58,276.64
  5. Step 5: Solve for x
    x = 58,276.64/234.47
  6. Step 6: Final answer
    x = 248.54

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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.