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Finding the Fourth Proportional to 143.88, 198.02 and 132.74

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Solution

The fourth proportional to 143.88, 198.02 and 132.74 is: 182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.88 : 198.02 = 132.74 : x
  2. Step 2: Convert to fraction form
    143.88/198.02 = 132.74/x
  3. Step 3: Cross multiply
    143.88x = 198.02 × 132.74
  4. Step 4: Simplify right side
    143.88x = 26,285.17
  5. Step 5: Solve for x
    x = 26,285.17/143.88
  6. Step 6: Final answer
    x = 182.69

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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.