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Finding the Third Proportional to 912.09 and 1,077.68

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Solution

The third proportional to 912.09 and 1,077.68 is: 1,273.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.09 : 1,077.68 = 1,077.68 : x
  2. Step 2: Convert to fraction form
    912.09/1,077.68 = 1,077.68/x
  3. Step 3: Cross multiply
    912.09x = 1,077.68 × 1,077.68
  4. Step 4: Simplify right side
    912.09x = 1,161,393.51
  5. Step 5: Solve for x
    x = 1,161,393.51/912.09
  6. Step 6: Final answer
    x = 1,273.33

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.