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Finding the Third Proportional to 991.50 and 1,350.75

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Solution

The third proportional to 991.50 and 1,350.75 is: 1,840.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    991.50 : 1,350.75 = 1,350.75 : x
  2. Step 2: Convert to fraction form
    991.50/1,350.75 = 1,350.75/x
  3. Step 3: Cross multiply
    991.50x = 1,350.75 × 1,350.75
  4. Step 4: Simplify right side
    991.50x = 1,824,525.56
  5. Step 5: Solve for x
    x = 1,824,525.56/991.50
  6. Step 6: Final answer
    x = 1,840.17

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.