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Finding the Third Proportional to 759 and 817.50

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Solution

The third proportional to 759 and 817.50 is: 880.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    759 : 817.50 = 817.50 : x
  2. Step 2: Convert to fraction form
    759/817.50 = 817.50/x
  3. Step 3: Cross multiply
    759x = 817.50 × 817.50
  4. Step 4: Simplify right side
    759x = 668,306.25
  5. Step 5: Solve for x
    x = 668,306.25/759
  6. Step 6: Final answer
    x = 880.51

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.