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Finding the Fourth Proportional to 169.97, 254.93 and 67.28

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Solution

The fourth proportional to 169.97, 254.93 and 67.28 is: 100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.97 : 254.93 = 67.28 : x
  2. Step 2: Convert to fraction form
    169.97/254.93 = 67.28/x
  3. Step 3: Cross multiply
    169.97x = 254.93 × 67.28
  4. Step 4: Simplify right side
    169.97x = 17,150.08
  5. Step 5: Solve for x
    x = 17,150.08/169.97
  6. Step 6: Final answer
    x = 100.90

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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.