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Finding the Fourth Proportional to 496.82, 685.66 and 331.04

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Solution

The fourth proportional to 496.82, 685.66 and 331.04 is: 456.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.82 : 685.66 = 331.04 : x
  2. Step 2: Convert to fraction form
    496.82/685.66 = 331.04/x
  3. Step 3: Cross multiply
    496.82x = 685.66 × 331.04
  4. Step 4: Simplify right side
    496.82x = 226,980.89
  5. Step 5: Solve for x
    x = 226,980.89/496.82
  6. Step 6: Final answer
    x = 456.87

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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.