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Finding the Third Proportional to 538.17 and 1,158.40

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Solution

The third proportional to 538.17 and 1,158.40 is: 2,493.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.17 : 1,158.40 = 1,158.40 : x
  2. Step 2: Convert to fraction form
    538.17/1,158.40 = 1,158.40/x
  3. Step 3: Cross multiply
    538.17x = 1,158.40 × 1,158.40
  4. Step 4: Simplify right side
    538.17x = 1,341,886.94
  5. Step 5: Solve for x
    x = 1,341,886.94/538.17
  6. Step 6: Final answer
    x = 2,493.42

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.