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Finding the Fourth Proportional to 226.73, 312.93 and 143.87

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Solution

The fourth proportional to 226.73, 312.93 and 143.87 is: 198.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.73 : 312.93 = 143.87 : x
  2. Step 2: Convert to fraction form
    226.73/312.93 = 143.87/x
  3. Step 3: Cross multiply
    226.73x = 312.93 × 143.87
  4. Step 4: Simplify right side
    226.73x = 45,021.24
  5. Step 5: Solve for x
    x = 45,021.24/226.73
  6. Step 6: Final answer
    x = 198.57

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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.