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Finding the Fourth Proportional to 226.46, 312.44 and 137.86

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Solution

The fourth proportional to 226.46, 312.44 and 137.86 is: 190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.46 : 312.44 = 137.86 : x
  2. Step 2: Convert to fraction form
    226.46/312.44 = 137.86/x
  3. Step 3: Cross multiply
    226.46x = 312.44 × 137.86
  4. Step 4: Simplify right side
    226.46x = 43,072.98
  5. Step 5: Solve for x
    x = 43,072.98/226.46
  6. Step 6: Final answer
    x = 190.20

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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.