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Finding the Third Proportional to 800.75 and 1,687.75

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Solution

The third proportional to 800.75 and 1,687.75 is: 3,557.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.75 : 1,687.75 = 1,687.75 : x
  2. Step 2: Convert to fraction form
    800.75/1,687.75 = 1,687.75/x
  3. Step 3: Cross multiply
    800.75x = 1,687.75 × 1,687.75
  4. Step 4: Simplify right side
    800.75x = 2,848,500.06
  5. Step 5: Solve for x
    x = 2,848,500.06/800.75
  6. Step 6: Final answer
    x = 3,557.29

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These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.