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Finding the Third Proportional to 815.75 and 1,162.25

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Solution

The third proportional to 815.75 and 1,162.25 is: 1,655.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    815.75 : 1,162.25 = 1,162.25 : x
  2. Step 2: Convert to fraction form
    815.75/1,162.25 = 1,162.25/x
  3. Step 3: Cross multiply
    815.75x = 1,162.25 × 1,162.25
  4. Step 4: Simplify right side
    815.75x = 1,350,825.06
  5. Step 5: Solve for x
    x = 1,350,825.06/815.75
  6. Step 6: Final answer
    x = 1,655.93

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.