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Finding the Fourth Proportional to 396.42, 546.42 and 265.32

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Solution

The fourth proportional to 396.42, 546.42 and 265.32 is: 365.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.42 : 546.42 = 265.32 : x
  2. Step 2: Convert to fraction form
    396.42/546.42 = 265.32/x
  3. Step 3: Cross multiply
    396.42x = 546.42 × 265.32
  4. Step 4: Simplify right side
    396.42x = 144,976.15
  5. Step 5: Solve for x
    x = 144,976.15/396.42
  6. Step 6: Final answer
    x = 365.71

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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.