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Finding the Third Proportional to 540.42 and 1,145.39

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Solution

The third proportional to 540.42 and 1,145.39 is: 2,427.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.42 : 1,145.39 = 1,145.39 : x
  2. Step 2: Convert to fraction form
    540.42/1,145.39 = 1,145.39/x
  3. Step 3: Cross multiply
    540.42x = 1,145.39 × 1,145.39
  4. Step 4: Simplify right side
    540.42x = 1,311,919.68
  5. Step 5: Solve for x
    x = 1,311,919.68/540.42
  6. Step 6: Final answer
    x = 2,427.58

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.