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Finding the Third Proportional to 156.62 and 342.19

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Solution

The third proportional to 156.62 and 342.19 is: 747.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.62 : 342.19 = 342.19 : x
  2. Step 2: Convert to fraction form
    156.62/342.19 = 342.19/x
  3. Step 3: Cross multiply
    156.62x = 342.19 × 342.19
  4. Step 4: Simplify right side
    156.62x = 117,096.30
  5. Step 5: Solve for x
    x = 117,096.30/156.62
  6. Step 6: Final answer
    x = 747.64

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.