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Finding the Fourth Proportional to 351.80, 481.85 and 331.86

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Solution

The fourth proportional to 351.80, 481.85 and 331.86 is: 454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.80 : 481.85 = 331.86 : x
  2. Step 2: Convert to fraction form
    351.80/481.85 = 331.86/x
  3. Step 3: Cross multiply
    351.80x = 481.85 × 331.86
  4. Step 4: Simplify right side
    351.80x = 159,906.74
  5. Step 5: Solve for x
    x = 159,906.74/351.80
  6. Step 6: Final answer
    x = 454.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.