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Finding the Third Proportional to 481.50 and 681.56

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Solution

The third proportional to 481.50 and 681.56 is: 964.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.50 : 681.56 = 681.56 : x
  2. Step 2: Convert to fraction form
    481.50/681.56 = 681.56/x
  3. Step 3: Cross multiply
    481.50x = 681.56 × 681.56
  4. Step 4: Simplify right side
    481.50x = 464,527.44
  5. Step 5: Solve for x
    x = 464,527.44/481.50
  6. Step 6: Final answer
    x = 964.75

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.