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Finding the Third Proportional to 207.56 and 339.94

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Solution

The third proportional to 207.56 and 339.94 is: 556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.56 : 339.94 = 339.94 : x
  2. Step 2: Convert to fraction form
    207.56/339.94 = 339.94/x
  3. Step 3: Cross multiply
    207.56x = 339.94 × 339.94
  4. Step 4: Simplify right side
    207.56x = 115,557.50
  5. Step 5: Solve for x
    x = 115,557.50/207.56
  6. Step 6: Final answer
    x = 556.74

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.