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Finding the Third Proportional to 396 and 538.88

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Solution

The third proportional to 396 and 538.88 is: 733.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396 : 538.88 = 538.88 : x
  2. Step 2: Convert to fraction form
    396/538.88 = 538.88/x
  3. Step 3: Cross multiply
    396x = 538.88 × 538.88
  4. Step 4: Simplify right side
    396x = 290,386.27
  5. Step 5: Solve for x
    x = 290,386.27/396
  6. Step 6: Final answer
    x = 733.30

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.