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Finding the Fourth Proportional to 396.06, 546 and 248.60

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Solution

The fourth proportional to 396.06, 546 and 248.60 is: 342.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.06 : 546 = 248.60 : x
  2. Step 2: Convert to fraction form
    396.06/546 = 248.60/x
  3. Step 3: Cross multiply
    396.06x = 546 × 248.60
  4. Step 4: Simplify right side
    396.06x = 135,735.60
  5. Step 5: Solve for x
    x = 135,735.60/396.06
  6. Step 6: Final answer
    x = 342.71

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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.