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Finding the Third Proportional to 156.38 and 335.63

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Solution

The third proportional to 156.38 and 335.63 is: 720.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.38 : 335.63 = 335.63 : x
  2. Step 2: Convert to fraction form
    156.38/335.63 = 335.63/x
  3. Step 3: Cross multiply
    156.38x = 335.63 × 335.63
  4. Step 4: Simplify right side
    156.38x = 112,644.14
  5. Step 5: Solve for x
    x = 112,644.14/156.38
  6. Step 6: Final answer
    x = 720.35

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.