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Finding the Fourth Proportional to 148.70, 221.92 and 132.29

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Solution

The fourth proportional to 148.70, 221.92 and 132.29 is: 197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.70 : 221.92 = 132.29 : x
  2. Step 2: Convert to fraction form
    148.70/221.92 = 132.29/x
  3. Step 3: Cross multiply
    148.70x = 221.92 × 132.29
  4. Step 4: Simplify right side
    148.70x = 29,356.36
  5. Step 5: Solve for x
    x = 29,356.36/148.70
  6. Step 6: Final answer
    x = 197.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.