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Finding the Fourth Proportional to 396.22, 594.11 and 220.57

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Solution

The fourth proportional to 396.22, 594.11 and 220.57 is: 330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.22 : 594.11 = 220.57 : x
  2. Step 2: Convert to fraction form
    396.22/594.11 = 220.57/x
  3. Step 3: Cross multiply
    396.22x = 594.11 × 220.57
  4. Step 4: Simplify right side
    396.22x = 131,045.56
  5. Step 5: Solve for x
    x = 131,045.56/396.22
  6. Step 6: Final answer
    x = 330.74

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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.