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Finding the Fourth Proportional to 167.69, 251.52 and 112.87

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Solution

The fourth proportional to 167.69, 251.52 and 112.87 is: 169.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.69 : 251.52 = 112.87 : x
  2. Step 2: Convert to fraction form
    167.69/251.52 = 112.87/x
  3. Step 3: Cross multiply
    167.69x = 251.52 × 112.87
  4. Step 4: Simplify right side
    167.69x = 28,387.24
  5. Step 5: Solve for x
    x = 28,387.24/167.69
  6. Step 6: Final answer
    x = 169.29

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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.