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Finding the Fourth Proportional to 249.50, 344.16 and 196.97

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Solution

The fourth proportional to 249.50, 344.16 and 196.97 is: 271.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.50 : 344.16 = 196.97 : x
  2. Step 2: Convert to fraction form
    249.50/344.16 = 196.97/x
  3. Step 3: Cross multiply
    249.50x = 344.16 × 196.97
  4. Step 4: Simplify right side
    249.50x = 67,788.64
  5. Step 5: Solve for x
    x = 67,788.64/249.50
  6. Step 6: Final answer
    x = 271.69

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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.