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Finding the Fourth Proportional to 178.39, 246.11 and 104.68

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Solution

The fourth proportional to 178.39, 246.11 and 104.68 is: 144.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.39 : 246.11 = 104.68 : x
  2. Step 2: Convert to fraction form
    178.39/246.11 = 104.68/x
  3. Step 3: Cross multiply
    178.39x = 246.11 × 104.68
  4. Step 4: Simplify right side
    178.39x = 25,762.44
  5. Step 5: Solve for x
    x = 25,762.44/178.39
  6. Step 6: Final answer
    x = 144.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.