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Finding the Fourth Proportional to 246.21, 338.90 and 227.99

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Solution

The fourth proportional to 246.21, 338.90 and 227.99 is: 313.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.21 : 338.90 = 227.99 : x
  2. Step 2: Convert to fraction form
    246.21/338.90 = 227.99/x
  3. Step 3: Cross multiply
    246.21x = 338.90 × 227.99
  4. Step 4: Simplify right side
    246.21x = 77,262.98
  5. Step 5: Solve for x
    x = 77,262.98/246.21
  6. Step 6: Final answer
    x = 313.81

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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.