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Finding the Third Proportional to 557.56 and 1,214.42

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Solution

The third proportional to 557.56 and 1,214.42 is: 2,645.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.56 : 1,214.42 = 1,214.42 : x
  2. Step 2: Convert to fraction form
    557.56/1,214.42 = 1,214.42/x
  3. Step 3: Cross multiply
    557.56x = 1,214.42 × 1,214.42
  4. Step 4: Simplify right side
    557.56x = 1,474,815.75
  5. Step 5: Solve for x
    x = 1,474,815.75/557.56
  6. Step 6: Final answer
    x = 2,645.12

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.