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Finding the Third Proportional to 87 and 183

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Solution

The third proportional to 87 and 183 is: 384.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87 : 183 = 183 : x
  2. Step 2: Convert to fraction form
    87/183 = 183/x
  3. Step 3: Cross multiply
    87x = 183 × 183
  4. Step 4: Simplify right side
    87x = 33,489
  5. Step 5: Solve for x
    x = 33,489/87
  6. Step 6: Final answer
    x = 384.93

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.