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Finding the Fourth Proportional to 171.67, 237.22 and 130.15

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Solution

The fourth proportional to 171.67, 237.22 and 130.15 is: 179.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.67 : 237.22 = 130.15 : x
  2. Step 2: Convert to fraction form
    171.67/237.22 = 130.15/x
  3. Step 3: Cross multiply
    171.67x = 237.22 × 130.15
  4. Step 4: Simplify right side
    171.67x = 30,873.86
  5. Step 5: Solve for x
    x = 30,873.86/171.67
  6. Step 6: Final answer
    x = 179.84

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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.