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Finding the Fourth Proportional to 396.09, 594.41 and 213.44

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Solution

The fourth proportional to 396.09, 594.41 and 213.44 is: 320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.09 : 594.41 = 213.44 : x
  2. Step 2: Convert to fraction form
    396.09/594.41 = 213.44/x
  3. Step 3: Cross multiply
    396.09x = 594.41 × 213.44
  4. Step 4: Simplify right side
    396.09x = 126,866.83
  5. Step 5: Solve for x
    x = 126,866.83/396.09
  6. Step 6: Final answer
    x = 320.30

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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.