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Finding the Fourth Proportional to 171.75, 237.15 and 125.22

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Solution

The fourth proportional to 171.75, 237.15 and 125.22 is: 172.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.75 : 237.15 = 125.22 : x
  2. Step 2: Convert to fraction form
    171.75/237.15 = 125.22/x
  3. Step 3: Cross multiply
    171.75x = 237.15 × 125.22
  4. Step 4: Simplify right side
    171.75x = 29,695.92
  5. Step 5: Solve for x
    x = 29,695.92/171.75
  6. Step 6: Final answer
    x = 172.90

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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.