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Finding the Third Proportional to 759.50 and 1,243.50

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Solution

The third proportional to 759.50 and 1,243.50 is: 2,035.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    759.50 : 1,243.50 = 1,243.50 : x
  2. Step 2: Convert to fraction form
    759.50/1,243.50 = 1,243.50/x
  3. Step 3: Cross multiply
    759.50x = 1,243.50 × 1,243.50
  4. Step 4: Simplify right side
    759.50x = 1,546,292.25
  5. Step 5: Solve for x
    x = 1,546,292.25/759.50
  6. Step 6: Final answer
    x = 2,035.93

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.