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Finding the Third Proportional to 481.75 and 663.38

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Solution

The third proportional to 481.75 and 663.38 is: 913.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.75 : 663.38 = 663.38 : x
  2. Step 2: Convert to fraction form
    481.75/663.38 = 663.38/x
  3. Step 3: Cross multiply
    481.75x = 663.38 × 663.38
  4. Step 4: Simplify right side
    481.75x = 440,066.39
  5. Step 5: Solve for x
    x = 440,066.39/481.75
  6. Step 6: Final answer
    x = 913.47

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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.