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Finding the Third Proportional to 727.75 and 1,089.25

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Solution

The third proportional to 727.75 and 1,089.25 is: 1,630.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.75 : 1,089.25 = 1,089.25 : x
  2. Step 2: Convert to fraction form
    727.75/1,089.25 = 1,089.25/x
  3. Step 3: Cross multiply
    727.75x = 1,089.25 × 1,089.25
  4. Step 4: Simplify right side
    727.75x = 1,186,465.56
  5. Step 5: Solve for x
    x = 1,186,465.56/727.75
  6. Step 6: Final answer
    x = 1,630.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.