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Finding the Fourth Proportional to 234.40, 351.66 and 147.76

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Solution

The fourth proportional to 234.40, 351.66 and 147.76 is: 221.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.40 : 351.66 = 147.76 : x
  2. Step 2: Convert to fraction form
    234.40/351.66 = 147.76/x
  3. Step 3: Cross multiply
    234.40x = 351.66 × 147.76
  4. Step 4: Simplify right side
    234.40x = 51,961.28
  5. Step 5: Solve for x
    x = 51,961.28/234.40
  6. Step 6: Final answer
    x = 221.68

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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.