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Finding the Fourth Proportional to 249.89, 344.77 and 197.44

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Solution

The fourth proportional to 249.89, 344.77 and 197.44 is: 272.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.89 : 344.77 = 197.44 : x
  2. Step 2: Convert to fraction form
    249.89/344.77 = 197.44/x
  3. Step 3: Cross multiply
    249.89x = 344.77 × 197.44
  4. Step 4: Simplify right side
    249.89x = 68,073.08
  5. Step 5: Solve for x
    x = 68,073.08/249.89
  6. Step 6: Final answer
    x = 272.41

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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.