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Finding the Third Proportional to 611.25 and 794.50

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Solution

The third proportional to 611.25 and 794.50 is: 1,032.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.25 : 794.50 = 794.50 : x
  2. Step 2: Convert to fraction form
    611.25/794.50 = 794.50/x
  3. Step 3: Cross multiply
    611.25x = 794.50 × 794.50
  4. Step 4: Simplify right side
    611.25x = 631,230.25
  5. Step 5: Solve for x
    x = 631,230.25/611.25
  6. Step 6: Final answer
    x = 1,032.69

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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.