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Finding the Fourth Proportional to 348.80, 481.12 and 245.12

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Solution

The fourth proportional to 348.80, 481.12 and 245.12 is: 338.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.80 : 481.12 = 245.12 : x
  2. Step 2: Convert to fraction form
    348.80/481.12 = 245.12/x
  3. Step 3: Cross multiply
    348.80x = 481.12 × 245.12
  4. Step 4: Simplify right side
    348.80x = 117,932.13
  5. Step 5: Solve for x
    x = 117,932.13/348.80
  6. Step 6: Final answer
    x = 338.11

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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.