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Finding the Third Proportional to 0.79 and 1.67

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Solution

The third proportional to 0.79 and 1.67 is: 3.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.79 : 1.67 = 1.67 : x
  2. Step 2: Convert to fraction form
    0.79/1.67 = 1.67/x
  3. Step 3: Cross multiply
    0.79x = 1.67 × 1.67
  4. Step 4: Simplify right side
    0.79x = 2.79
  5. Step 5: Solve for x
    x = 2.79/0.79
  6. Step 6: Final answer
    x = 3.53

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.