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Finding the Fourth Proportional to 169.27, 254.03 and 108.43

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Solution

The fourth proportional to 169.27, 254.03 and 108.43 is: 162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.27 : 254.03 = 108.43 : x
  2. Step 2: Convert to fraction form
    169.27/254.03 = 108.43/x
  3. Step 3: Cross multiply
    169.27x = 254.03 × 108.43
  4. Step 4: Simplify right side
    169.27x = 27,543.93
  5. Step 5: Solve for x
    x = 27,543.93/169.27
  6. Step 6: Final answer
    x = 162.72

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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.