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Finding the Fourth Proportional to 331.44, 500.04 and 321.36

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Solution

The fourth proportional to 331.44, 500.04 and 321.36 is: 484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.44 : 500.04 = 321.36 : x
  2. Step 2: Convert to fraction form
    331.44/500.04 = 321.36/x
  3. Step 3: Cross multiply
    331.44x = 500.04 × 321.36
  4. Step 4: Simplify right side
    331.44x = 160,692.85
  5. Step 5: Solve for x
    x = 160,692.85/331.44
  6. Step 6: Final answer
    x = 484.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.