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Finding the Fourth Proportional to 446.19, 667.96 and 331.15

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Solution

The fourth proportional to 446.19, 667.96 and 331.15 is: 495.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.19 : 667.96 = 331.15 : x
  2. Step 2: Convert to fraction form
    446.19/667.96 = 331.15/x
  3. Step 3: Cross multiply
    446.19x = 667.96 × 331.15
  4. Step 4: Simplify right side
    446.19x = 221,194.95
  5. Step 5: Solve for x
    x = 221,194.95/446.19
  6. Step 6: Final answer
    x = 495.74

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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.