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Finding the Third Proportional to 706.69 and 1,379.06

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Solution

The third proportional to 706.69 and 1,379.06 is: 2,691.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.69 : 1,379.06 = 1,379.06 : x
  2. Step 2: Convert to fraction form
    706.69/1,379.06 = 1,379.06/x
  3. Step 3: Cross multiply
    706.69x = 1,379.06 × 1,379.06
  4. Step 4: Simplify right side
    706.69x = 1,901,813.38
  5. Step 5: Solve for x
    x = 1,901,813.38/706.69
  6. Step 6: Final answer
    x = 2,691.17

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.