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Finding the Fourth Proportional to 249.88, 344.90 and 151.62

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Solution

The fourth proportional to 249.88, 344.90 and 151.62 is: 209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.88 : 344.90 = 151.62 : x
  2. Step 2: Convert to fraction form
    249.88/344.90 = 151.62/x
  3. Step 3: Cross multiply
    249.88x = 344.90 × 151.62
  4. Step 4: Simplify right side
    249.88x = 52,292.98
  5. Step 5: Solve for x
    x = 52,292.98/249.88
  6. Step 6: Final answer
    x = 209.27

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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.