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Finding the Fourth Proportional to 143.92, 198.80 and 132.76

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Solution

The fourth proportional to 143.92, 198.80 and 132.76 is: 183.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.92 : 198.80 = 132.76 : x
  2. Step 2: Convert to fraction form
    143.92/198.80 = 132.76/x
  3. Step 3: Cross multiply
    143.92x = 198.80 × 132.76
  4. Step 4: Simplify right side
    143.92x = 26,392.69
  5. Step 5: Solve for x
    x = 26,392.69/143.92
  6. Step 6: Final answer
    x = 183.38

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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.