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Finding the Third Proportional to 858.38 and 1,119.56

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Solution

The third proportional to 858.38 and 1,119.56 is: 1,460.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.38 : 1,119.56 = 1,119.56 : x
  2. Step 2: Convert to fraction form
    858.38/1,119.56 = 1,119.56/x
  3. Step 3: Cross multiply
    858.38x = 1,119.56 × 1,119.56
  4. Step 4: Simplify right side
    858.38x = 1,253,420.19
  5. Step 5: Solve for x
    x = 1,253,420.19/858.38
  6. Step 6: Final answer
    x = 1,460.22

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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.