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Finding the Fourth Proportional to 269.92, 372.26 and 171.71

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Solution

The fourth proportional to 269.92, 372.26 and 171.71 is: 236.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.92 : 372.26 = 171.71 : x
  2. Step 2: Convert to fraction form
    269.92/372.26 = 171.71/x
  3. Step 3: Cross multiply
    269.92x = 372.26 × 171.71
  4. Step 4: Simplify right side
    269.92x = 63,920.76
  5. Step 5: Solve for x
    x = 63,920.76/269.92
  6. Step 6: Final answer
    x = 236.81

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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.