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Finding the Fourth Proportional to 249.40, 344.19 and 171.88

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Solution

The fourth proportional to 249.40, 344.19 and 171.88 is: 237.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.40 : 344.19 = 171.88 : x
  2. Step 2: Convert to fraction form
    249.40/344.19 = 171.88/x
  3. Step 3: Cross multiply
    249.40x = 344.19 × 171.88
  4. Step 4: Simplify right side
    249.40x = 59,159.38
  5. Step 5: Solve for x
    x = 59,159.38/249.40
  6. Step 6: Final answer
    x = 237.21

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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.