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Finding the Third Proportional to 55.45 and 118.55

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Solution

The third proportional to 55.45 and 118.55 is: 253.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.45 : 118.55 = 118.55 : x
  2. Step 2: Convert to fraction form
    55.45/118.55 = 118.55/x
  3. Step 3: Cross multiply
    55.45x = 118.55 × 118.55
  4. Step 4: Simplify right side
    55.45x = 14,053.36
  5. Step 5: Solve for x
    x = 14,053.36/55.45
  6. Step 6: Final answer
    x = 253.43

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.