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Finding the Third Proportional to 156.38 and 343.13

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Solution

The third proportional to 156.38 and 343.13 is: 752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.38 : 343.13 = 343.13 : x
  2. Step 2: Convert to fraction form
    156.38/343.13 = 343.13/x
  3. Step 3: Cross multiply
    156.38x = 343.13 × 343.13
  4. Step 4: Simplify right side
    156.38x = 117,734.77
  5. Step 5: Solve for x
    x = 117,734.77/156.38
  6. Step 6: Final answer
    x = 752.90

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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.