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Finding the Third Proportional to 991.75 and 1,452.13

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Solution

The third proportional to 991.75 and 1,452.13 is: 2,126.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    991.75 : 1,452.13 = 1,452.13 : x
  2. Step 2: Convert to fraction form
    991.75/1,452.13 = 1,452.13/x
  3. Step 3: Cross multiply
    991.75x = 1,452.13 × 1,452.13
  4. Step 4: Simplify right side
    991.75x = 2,108,667.02
  5. Step 5: Solve for x
    x = 2,108,667.02/991.75
  6. Step 6: Final answer
    x = 2,126.21

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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.