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Finding the Fourth Proportional to 349.41, 481.09 and 296.85

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Solution

The fourth proportional to 349.41, 481.09 and 296.85 is: 408.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.41 : 481.09 = 296.85 : x
  2. Step 2: Convert to fraction form
    349.41/481.09 = 296.85/x
  3. Step 3: Cross multiply
    349.41x = 481.09 × 296.85
  4. Step 4: Simplify right side
    349.41x = 142,811.57
  5. Step 5: Solve for x
    x = 142,811.57/349.41
  6. Step 6: Final answer
    x = 408.72

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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.