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Finding the Fourth Proportional to 247.17, 339.93 and 197.97

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Solution

The fourth proportional to 247.17, 339.93 and 197.97 is: 272.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.17 : 339.93 = 197.97 : x
  2. Step 2: Convert to fraction form
    247.17/339.93 = 197.97/x
  3. Step 3: Cross multiply
    247.17x = 339.93 × 197.97
  4. Step 4: Simplify right side
    247.17x = 67,295.94
  5. Step 5: Solve for x
    x = 67,295.94/247.17
  6. Step 6: Final answer
    x = 272.27

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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.