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Finding the Fourth Proportional to 331.08, 497.32 and 321.96

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Solution

The fourth proportional to 331.08, 497.32 and 321.96 is: 483.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.08 : 497.32 = 321.96 : x
  2. Step 2: Convert to fraction form
    331.08/497.32 = 321.96/x
  3. Step 3: Cross multiply
    331.08x = 497.32 × 321.96
  4. Step 4: Simplify right side
    331.08x = 160,117.15
  5. Step 5: Solve for x
    x = 160,117.15/331.08
  6. Step 6: Final answer
    x = 483.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.