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Finding the Third Proportional to 416.25 and 912.75

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Solution

The third proportional to 416.25 and 912.75 is: 2,001.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.25 : 912.75 = 912.75 : x
  2. Step 2: Convert to fraction form
    416.25/912.75 = 912.75/x
  3. Step 3: Cross multiply
    416.25x = 912.75 × 912.75
  4. Step 4: Simplify right side
    416.25x = 833,112.56
  5. Step 5: Solve for x
    x = 833,112.56/416.25
  6. Step 6: Final answer
    x = 2,001.47

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.