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Finding the Fourth Proportional to 168.28, 232.31 and 126.93

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Solution

The fourth proportional to 168.28, 232.31 and 126.93 is: 175.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.28 : 232.31 = 126.93 : x
  2. Step 2: Convert to fraction form
    168.28/232.31 = 126.93/x
  3. Step 3: Cross multiply
    168.28x = 232.31 × 126.93
  4. Step 4: Simplify right side
    168.28x = 29,487.23
  5. Step 5: Solve for x
    x = 29,487.23/168.28
  6. Step 6: Final answer
    x = 175.23

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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.