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Finding the Fourth Proportional to 331.64, 494.76 and 304.85

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Solution

The fourth proportional to 331.64, 494.76 and 304.85 is: 454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.64 : 494.76 = 304.85 : x
  2. Step 2: Convert to fraction form
    331.64/494.76 = 304.85/x
  3. Step 3: Cross multiply
    331.64x = 494.76 × 304.85
  4. Step 4: Simplify right side
    331.64x = 150,827.59
  5. Step 5: Solve for x
    x = 150,827.59/331.64
  6. Step 6: Final answer
    x = 454.79

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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.