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Finding the Third Proportional to 396.88 and 606.94

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Solution

The third proportional to 396.88 and 606.94 is: 928.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.88 : 606.94 = 606.94 : x
  2. Step 2: Convert to fraction form
    396.88/606.94 = 606.94/x
  3. Step 3: Cross multiply
    396.88x = 606.94 × 606.94
  4. Step 4: Simplify right side
    396.88x = 368,373.13
  5. Step 5: Solve for x
    x = 368,373.13/396.88
  6. Step 6: Final answer
    x = 928.18

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.