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Finding the Third Proportional to 763.50 and 995.25

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Solution

The third proportional to 763.50 and 995.25 is: 1,297.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    763.50 : 995.25 = 995.25 : x
  2. Step 2: Convert to fraction form
    763.50/995.25 = 995.25/x
  3. Step 3: Cross multiply
    763.50x = 995.25 × 995.25
  4. Step 4: Simplify right side
    763.50x = 990,522.56
  5. Step 5: Solve for x
    x = 990,522.56/763.50
  6. Step 6: Final answer
    x = 1,297.34

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.