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Finding the Third Proportional to 607.69 and 1,311.38

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Solution

The third proportional to 607.69 and 1,311.38 is: 2,829.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.69 : 1,311.38 = 1,311.38 : x
  2. Step 2: Convert to fraction form
    607.69/1,311.38 = 1,311.38/x
  3. Step 3: Cross multiply
    607.69x = 1,311.38 × 1,311.38
  4. Step 4: Simplify right side
    607.69x = 1,719,704.39
  5. Step 5: Solve for x
    x = 1,719,704.39/607.69
  6. Step 6: Final answer
    x = 2,829.92

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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.