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Finding the Fourth Proportional to 348.98, 481.21 and 249.35

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Solution

The fourth proportional to 348.98, 481.21 and 249.35 is: 343.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.98 : 481.21 = 249.35 : x
  2. Step 2: Convert to fraction form
    348.98/481.21 = 249.35/x
  3. Step 3: Cross multiply
    348.98x = 481.21 × 249.35
  4. Step 4: Simplify right side
    348.98x = 119,986.68
  5. Step 5: Solve for x
    x = 119,986.68/348.98
  6. Step 6: Final answer
    x = 343.83

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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.