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Finding the Fourth Proportional to 349.12, 481.92 and 232.64

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Solution

The fourth proportional to 349.12, 481.92 and 232.64 is: 321.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.12 : 481.92 = 232.64 : x
  2. Step 2: Convert to fraction form
    349.12/481.92 = 232.64/x
  3. Step 3: Cross multiply
    349.12x = 481.92 × 232.64
  4. Step 4: Simplify right side
    349.12x = 112,113.87
  5. Step 5: Solve for x
    x = 112,113.87/349.12
  6. Step 6: Final answer
    x = 321.13

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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.