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Finding the Third Proportional to 107.72 and 228.66

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Solution

The third proportional to 107.72 and 228.66 is: 485.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.72 : 228.66 = 228.66 : x
  2. Step 2: Convert to fraction form
    107.72/228.66 = 228.66/x
  3. Step 3: Cross multiply
    107.72x = 228.66 × 228.66
  4. Step 4: Simplify right side
    107.72x = 52,283.68
  5. Step 5: Solve for x
    x = 52,283.68/107.72
  6. Step 6: Final answer
    x = 485.37

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.