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Finding the Third Proportional to 74.94 and 164.88

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Solution

The third proportional to 74.94 and 164.88 is: 362.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.94 : 164.88 = 164.88 : x
  2. Step 2: Convert to fraction form
    74.94/164.88 = 164.88/x
  3. Step 3: Cross multiply
    74.94x = 164.88 × 164.88
  4. Step 4: Simplify right side
    74.94x = 27,183.77
  5. Step 5: Solve for x
    x = 27,183.77/74.94
  6. Step 6: Final answer
    x = 362.75

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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.