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Finding the Fourth Proportional to 347.60, 479.85 and 249.41

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Solution

The fourth proportional to 347.60, 479.85 and 249.41 is: 344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.60 : 479.85 = 249.41 : x
  2. Step 2: Convert to fraction form
    347.60/479.85 = 249.41/x
  3. Step 3: Cross multiply
    347.60x = 479.85 × 249.41
  4. Step 4: Simplify right side
    347.60x = 119,679.39
  5. Step 5: Solve for x
    x = 119,679.39/347.60
  6. Step 6: Final answer
    x = 344.30

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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.