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Finding the Fourth Proportional to 171.82, 237.13 and 106.31

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Solution

The fourth proportional to 171.82, 237.13 and 106.31 is: 146.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.82 : 237.13 = 106.31 : x
  2. Step 2: Convert to fraction form
    171.82/237.13 = 106.31/x
  3. Step 3: Cross multiply
    171.82x = 237.13 × 106.31
  4. Step 4: Simplify right side
    171.82x = 25,209.62
  5. Step 5: Solve for x
    x = 25,209.62/171.82
  6. Step 6: Final answer
    x = 146.72

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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.