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Finding the Fourth Proportional to 171.71, 237.16 and 130.17

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Solution

The fourth proportional to 171.71, 237.16 and 130.17 is: 179.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.71 : 237.16 = 130.17 : x
  2. Step 2: Convert to fraction form
    171.71/237.16 = 130.17/x
  3. Step 3: Cross multiply
    171.71x = 237.16 × 130.17
  4. Step 4: Simplify right side
    171.71x = 30,871.12
  5. Step 5: Solve for x
    x = 30,871.12/171.71
  6. Step 6: Final answer
    x = 179.79

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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.