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Finding the Fourth Proportional to 169.97, 255.20 and 88.88

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Solution

The fourth proportional to 169.97, 255.20 and 88.88 is: 133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.97 : 255.20 = 88.88 : x
  2. Step 2: Convert to fraction form
    169.97/255.20 = 88.88/x
  3. Step 3: Cross multiply
    169.97x = 255.20 × 88.88
  4. Step 4: Simplify right side
    169.97x = 22,682.18
  5. Step 5: Solve for x
    x = 22,682.18/169.97
  6. Step 6: Final answer
    x = 133.45

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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.