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Finding the Third Proportional to 711.75 and 1,040.25

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Solution

The third proportional to 711.75 and 1,040.25 is: 1,520.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.75 : 1,040.25 = 1,040.25 : x
  2. Step 2: Convert to fraction form
    711.75/1,040.25 = 1,040.25/x
  3. Step 3: Cross multiply
    711.75x = 1,040.25 × 1,040.25
  4. Step 4: Simplify right side
    711.75x = 1,082,120.06
  5. Step 5: Solve for x
    x = 1,082,120.06/711.75
  6. Step 6: Final answer
    x = 1,520.37

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.