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Finding the Third Proportional to 725.63 and 1,086.75

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Solution

The third proportional to 725.63 and 1,086.75 is: 1,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.63 : 1,086.75 = 1,086.75 : x
  2. Step 2: Convert to fraction form
    725.63/1,086.75 = 1,086.75/x
  3. Step 3: Cross multiply
    725.63x = 1,086.75 × 1,086.75
  4. Step 4: Simplify right side
    725.63x = 1,181,025.56
  5. Step 5: Solve for x
    x = 1,181,025.56/725.63
  6. Step 6: Final answer
    x = 1,627.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.