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Finding the Fourth Proportional to 246.88, 339.24 and 220.96

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Solution

The fourth proportional to 246.88, 339.24 and 220.96 is: 303.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.88 : 339.24 = 220.96 : x
  2. Step 2: Convert to fraction form
    246.88/339.24 = 220.96/x
  3. Step 3: Cross multiply
    246.88x = 339.24 × 220.96
  4. Step 4: Simplify right side
    246.88x = 74,958.47
  5. Step 5: Solve for x
    x = 74,958.47/246.88
  6. Step 6: Final answer
    x = 303.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.