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Finding the Third Proportional to 55.22 and 120.70

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Solution

The third proportional to 55.22 and 120.70 is: 263.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.22 : 120.70 = 120.70 : x
  2. Step 2: Convert to fraction form
    55.22/120.70 = 120.70/x
  3. Step 3: Cross multiply
    55.22x = 120.70 × 120.70
  4. Step 4: Simplify right side
    55.22x = 14,569.24
  5. Step 5: Solve for x
    x = 14,569.24/55.22
  6. Step 6: Final answer
    x = 263.85

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.