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Finding the Fourth Proportional to 347.98, 480.17 and 200.61

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Solution

The fourth proportional to 347.98, 480.17 and 200.61 is: 276.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.98 : 480.17 = 200.61 : x
  2. Step 2: Convert to fraction form
    347.98/480.17 = 200.61/x
  3. Step 3: Cross multiply
    347.98x = 480.17 × 200.61
  4. Step 4: Simplify right side
    347.98x = 96,326.90
  5. Step 5: Solve for x
    x = 96,326.90/347.98
  6. Step 6: Final answer
    x = 276.82

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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.