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Finding the Fourth Proportional to 169.62, 254.16 and 88.38

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Solution

The fourth proportional to 169.62, 254.16 and 88.38 is: 132.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.62 : 254.16 = 88.38 : x
  2. Step 2: Convert to fraction form
    169.62/254.16 = 88.38/x
  3. Step 3: Cross multiply
    169.62x = 254.16 × 88.38
  4. Step 4: Simplify right side
    169.62x = 22,462.66
  5. Step 5: Solve for x
    x = 22,462.66/169.62
  6. Step 6: Final answer
    x = 132.43

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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.