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Finding the Fourth Proportional to 234.22, 351.79 and 147.71

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Solution

The fourth proportional to 234.22, 351.79 and 147.71 is: 221.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.22 : 351.79 = 147.71 : x
  2. Step 2: Convert to fraction form
    234.22/351.79 = 147.71/x
  3. Step 3: Cross multiply
    234.22x = 351.79 × 147.71
  4. Step 4: Simplify right side
    234.22x = 51,962.90
  5. Step 5: Solve for x
    x = 51,962.90/234.22
  6. Step 6: Final answer
    x = 221.86

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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.