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Finding the Fourth Proportional to 198.18, 273.17 and 132.57

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Solution

The fourth proportional to 198.18, 273.17 and 132.57 is: 182.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.18 : 273.17 = 132.57 : x
  2. Step 2: Convert to fraction form
    198.18/273.17 = 132.57/x
  3. Step 3: Cross multiply
    198.18x = 273.17 × 132.57
  4. Step 4: Simplify right side
    198.18x = 36,213.48
  5. Step 5: Solve for x
    x = 36,213.48/198.18
  6. Step 6: Final answer
    x = 182.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.