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Finding the Third Proportional to 540.42 and 834.05

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Solution

The third proportional to 540.42 and 834.05 is: 1,287.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.42 : 834.05 = 834.05 : x
  2. Step 2: Convert to fraction form
    540.42/834.05 = 834.05/x
  3. Step 3: Cross multiply
    540.42x = 834.05 × 834.05
  4. Step 4: Simplify right side
    540.42x = 695,634.19
  5. Step 5: Solve for x
    x = 695,634.19/540.42
  6. Step 6: Final answer
    x = 1,287.21

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.