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Finding the Third Proportional to 55.50 and 122.02

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Solution

The third proportional to 55.50 and 122.02 is: 268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.50 : 122.02 = 122.02 : x
  2. Step 2: Convert to fraction form
    55.50/122.02 = 122.02/x
  3. Step 3: Cross multiply
    55.50x = 122.02 × 122.02
  4. Step 4: Simplify right side
    55.50x = 14,887.81
  5. Step 5: Solve for x
    x = 14,887.81/55.50
  6. Step 6: Final answer
    x = 268.25

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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.