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Finding the Fourth Proportional to 331.29, 499.58 and 326.73

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Solution

The fourth proportional to 331.29, 499.58 and 326.73 is: 492.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.29 : 499.58 = 326.73 : x
  2. Step 2: Convert to fraction form
    331.29/499.58 = 326.73/x
  3. Step 3: Cross multiply
    331.29x = 499.58 × 326.73
  4. Step 4: Simplify right side
    331.29x = 163,226.52
  5. Step 5: Solve for x
    x = 163,226.52/331.29
  6. Step 6: Final answer
    x = 492.71

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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.