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Finding the Third Proportional to 90.28 and 176.13

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Solution

The third proportional to 90.28 and 176.13 is: 343.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90.28 : 176.13 = 176.13 : x
  2. Step 2: Convert to fraction form
    90.28/176.13 = 176.13/x
  3. Step 3: Cross multiply
    90.28x = 176.13 × 176.13
  4. Step 4: Simplify right side
    90.28x = 31,022.77
  5. Step 5: Solve for x
    x = 31,022.77/90.28
  6. Step 6: Final answer
    x = 343.62

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.