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Finding the Third Proportional to 156.75 and 207.94

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Solution

The third proportional to 156.75 and 207.94 is: 275.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.75 : 207.94 = 207.94 : x
  2. Step 2: Convert to fraction form
    156.75/207.94 = 207.94/x
  3. Step 3: Cross multiply
    156.75x = 207.94 × 207.94
  4. Step 4: Simplify right side
    156.75x = 43,238.00
  5. Step 5: Solve for x
    x = 43,238.00/156.75
  6. Step 6: Final answer
    x = 275.84

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.