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Finding the Fourth Proportional to 331.93, 494.97 and 308.85

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Solution

The fourth proportional to 331.93, 494.97 and 308.85 is: 460.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.93 : 494.97 = 308.85 : x
  2. Step 2: Convert to fraction form
    331.93/494.97 = 308.85/x
  3. Step 3: Cross multiply
    331.93x = 494.97 × 308.85
  4. Step 4: Simplify right side
    331.93x = 152,869.78
  5. Step 5: Solve for x
    x = 152,869.78/331.93
  6. Step 6: Final answer
    x = 460.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.