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Finding the Fourth Proportional to 396.68, 595.24 and 153.22

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Solution

The fourth proportional to 396.68, 595.24 and 153.22 is: 229.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.68 : 595.24 = 153.22 : x
  2. Step 2: Convert to fraction form
    396.68/595.24 = 153.22/x
  3. Step 3: Cross multiply
    396.68x = 595.24 × 153.22
  4. Step 4: Simplify right side
    396.68x = 91,200.80
  5. Step 5: Solve for x
    x = 91,200.80/396.68
  6. Step 6: Final answer
    x = 229.91

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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.