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Finding the Third Proportional to 494.86 and 696.09

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Solution

The third proportional to 494.86 and 696.09 is: 979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.86 : 696.09 = 696.09 : x
  2. Step 2: Convert to fraction form
    494.86/696.09 = 696.09/x
  3. Step 3: Cross multiply
    494.86x = 696.09 × 696.09
  4. Step 4: Simplify right side
    494.86x = 484,546.51
  5. Step 5: Solve for x
    x = 484,546.51/494.86
  6. Step 6: Final answer
    x = 979.16

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.