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Finding the Third Proportional to 606.80 and 1,309.78

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Solution

The third proportional to 606.80 and 1,309.78 is: 2,827.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.80 : 1,309.78 = 1,309.78 : x
  2. Step 2: Convert to fraction form
    606.80/1,309.78 = 1,309.78/x
  3. Step 3: Cross multiply
    606.80x = 1,309.78 × 1,309.78
  4. Step 4: Simplify right side
    606.80x = 1,715,526.92
  5. Step 5: Solve for x
    x = 1,715,526.92/606.80
  6. Step 6: Final answer
    x = 2,827.18

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.