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Finding the Fourth Proportional to 227.99, 343.67 and 214.78

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Solution

The fourth proportional to 227.99, 343.67 and 214.78 is: 323.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.99 : 343.67 = 214.78 : x
  2. Step 2: Convert to fraction form
    227.99/343.67 = 214.78/x
  3. Step 3: Cross multiply
    227.99x = 343.67 × 214.78
  4. Step 4: Simplify right side
    227.99x = 73,813.44
  5. Step 5: Solve for x
    x = 73,813.44/227.99
  6. Step 6: Final answer
    x = 323.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.