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Finding the Fourth Proportional to 348.92, 481.56 and 283.22

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Solution

The fourth proportional to 348.92, 481.56 and 283.22 is: 390.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.92 : 481.56 = 283.22 : x
  2. Step 2: Convert to fraction form
    348.92/481.56 = 283.22/x
  3. Step 3: Cross multiply
    348.92x = 481.56 × 283.22
  4. Step 4: Simplify right side
    348.92x = 136,387.42
  5. Step 5: Solve for x
    x = 136,387.42/348.92
  6. Step 6: Final answer
    x = 390.88

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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.