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Finding the Third Proportional to 764.12 and 1,170.07

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Solution

The third proportional to 764.12 and 1,170.07 is: 1,791.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.12 : 1,170.07 = 1,170.07 : x
  2. Step 2: Convert to fraction form
    764.12/1,170.07 = 1,170.07/x
  3. Step 3: Cross multiply
    764.12x = 1,170.07 × 1,170.07
  4. Step 4: Simplify right side
    764.12x = 1,369,064.54
  5. Step 5: Solve for x
    x = 1,369,064.54/764.12
  6. Step 6: Final answer
    x = 1,791.69

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.