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Finding the Fourth Proportional to 246.97, 339.29 and 221.08

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Solution

The fourth proportional to 246.97, 339.29 and 221.08 is: 303.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.97 : 339.29 = 221.08 : x
  2. Step 2: Convert to fraction form
    246.97/339.29 = 221.08/x
  3. Step 3: Cross multiply
    246.97x = 339.29 × 221.08
  4. Step 4: Simplify right side
    246.97x = 75,010.79
  5. Step 5: Solve for x
    x = 75,010.79/246.97
  6. Step 6: Final answer
    x = 303.72

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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.