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Finding the Third Proportional to 18.79 and 35.48

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Solution

The third proportional to 18.79 and 35.48 is: 67.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.79 : 35.48 = 35.48 : x
  2. Step 2: Convert to fraction form
    18.79/35.48 = 35.48/x
  3. Step 3: Cross multiply
    18.79x = 35.48 × 35.48
  4. Step 4: Simplify right side
    18.79x = 1,259.16
  5. Step 5: Solve for x
    x = 1,259.16/18.79
  6. Step 6: Final answer
    x = 67.03

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.