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Finding the Fourth Proportional to 396.01, 546.24 and 238.60

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Solution

The fourth proportional to 396.01, 546.24 and 238.60 is: 329.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.01 : 546.24 = 238.60 : x
  2. Step 2: Convert to fraction form
    396.01/546.24 = 238.60/x
  3. Step 3: Cross multiply
    396.01x = 546.24 × 238.60
  4. Step 4: Simplify right side
    396.01x = 130,332.86
  5. Step 5: Solve for x
    x = 130,332.86/396.01
  6. Step 6: Final answer
    x = 329.12

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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.