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Finding the Third Proportional to 257.39 and 566.11

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Solution

The third proportional to 257.39 and 566.11 is: 1,245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.39 : 566.11 = 566.11 : x
  2. Step 2: Convert to fraction form
    257.39/566.11 = 566.11/x
  3. Step 3: Cross multiply
    257.39x = 566.11 × 566.11
  4. Step 4: Simplify right side
    257.39x = 320,479.82
  5. Step 5: Solve for x
    x = 320,479.82/257.39
  6. Step 6: Final answer
    x = 1,245.11

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.