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Finding the Fourth Proportional to 349.60, 481.20 and 245.92

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Solution

The fourth proportional to 349.60, 481.20 and 245.92 is: 338.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.60 : 481.20 = 245.92 : x
  2. Step 2: Convert to fraction form
    349.60/481.20 = 245.92/x
  3. Step 3: Cross multiply
    349.60x = 481.20 × 245.92
  4. Step 4: Simplify right side
    349.60x = 118,336.70
  5. Step 5: Solve for x
    x = 118,336.70/349.60
  6. Step 6: Final answer
    x = 338.49

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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.