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Finding the Fourth Proportional to 348.76, 481.11 and 217.85

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Solution

The fourth proportional to 348.76, 481.11 and 217.85 is: 300.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.76 : 481.11 = 217.85 : x
  2. Step 2: Convert to fraction form
    348.76/481.11 = 217.85/x
  3. Step 3: Cross multiply
    348.76x = 481.11 × 217.85
  4. Step 4: Simplify right side
    348.76x = 104,806.59
  5. Step 5: Solve for x
    x = 104,806.59/348.76
  6. Step 6: Final answer
    x = 300.51

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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.