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Finding the Third Proportional to 617.94 and 1,287.14

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Solution

The third proportional to 617.94 and 1,287.14 is: 2,681.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.94 : 1,287.14 = 1,287.14 : x
  2. Step 2: Convert to fraction form
    617.94/1,287.14 = 1,287.14/x
  3. Step 3: Cross multiply
    617.94x = 1,287.14 × 1,287.14
  4. Step 4: Simplify right side
    617.94x = 1,656,730.99
  5. Step 5: Solve for x
    x = 1,656,730.99/617.94
  6. Step 6: Final answer
    x = 2,681.05

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.