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Finding the Third Proportional to 717.19 and 1,519.80

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Solution

The third proportional to 717.19 and 1,519.80 is: 3,220.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.19 : 1,519.80 = 1,519.80 : x
  2. Step 2: Convert to fraction form
    717.19/1,519.80 = 1,519.80/x
  3. Step 3: Cross multiply
    717.19x = 1,519.80 × 1,519.80
  4. Step 4: Simplify right side
    717.19x = 2,309,806.29
  5. Step 5: Solve for x
    x = 2,309,806.29/717.19
  6. Step 6: Final answer
    x = 3,220.64

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.