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Finding the Fourth Proportional to 379.67, 523.22 and 327.20

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Solution

The fourth proportional to 379.67, 523.22 and 327.20 is: 450.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.67 : 523.22 = 327.20 : x
  2. Step 2: Convert to fraction form
    379.67/523.22 = 327.20/x
  3. Step 3: Cross multiply
    379.67x = 523.22 × 327.20
  4. Step 4: Simplify right side
    379.67x = 171,193.33
  5. Step 5: Solve for x
    x = 171,193.33/379.67
  6. Step 6: Final answer
    x = 450.91

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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.