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Finding the Fourth Proportional to 171.68, 237.30 and 151.88

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Solution

The fourth proportional to 171.68, 237.30 and 151.88 is: 209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.68 : 237.30 = 151.88 : x
  2. Step 2: Convert to fraction form
    171.68/237.30 = 151.88/x
  3. Step 3: Cross multiply
    171.68x = 237.30 × 151.88
  4. Step 4: Simplify right side
    171.68x = 36,039.18
  5. Step 5: Solve for x
    x = 36,039.18/171.68
  6. Step 6: Final answer
    x = 209.92

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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.