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Finding the Third Proportional to 779.44 and 1,138.97

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Solution

The third proportional to 779.44 and 1,138.97 is: 1,664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    779.44 : 1,138.97 = 1,138.97 : x
  2. Step 2: Convert to fraction form
    779.44/1,138.97 = 1,138.97/x
  3. Step 3: Cross multiply
    779.44x = 1,138.97 × 1,138.97
  4. Step 4: Simplify right side
    779.44x = 1,297,249.81
  5. Step 5: Solve for x
    x = 1,297,249.81/779.44
  6. Step 6: Final answer
    x = 1,664.34

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.