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Finding the Third Proportional to 178.03 and 378.42

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Solution

The third proportional to 178.03 and 378.42 is: 804.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.03 : 378.42 = 378.42 : x
  2. Step 2: Convert to fraction form
    178.03/378.42 = 378.42/x
  3. Step 3: Cross multiply
    178.03x = 378.42 × 378.42
  4. Step 4: Simplify right side
    178.03x = 143,203.12
  5. Step 5: Solve for x
    x = 143,203.12/178.03
  6. Step 6: Final answer
    x = 804.37

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.