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Finding the Third Proportional to 557.75 and 1,178.38

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Solution

The third proportional to 557.75 and 1,178.38 is: 2,489.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.75 : 1,178.38 = 1,178.38 : x
  2. Step 2: Convert to fraction form
    557.75/1,178.38 = 1,178.38/x
  3. Step 3: Cross multiply
    557.75x = 1,178.38 × 1,178.38
  4. Step 4: Simplify right side
    557.75x = 1,388,567.64
  5. Step 5: Solve for x
    x = 1,388,567.64/557.75
  6. Step 6: Final answer
    x = 2,489.59

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.