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Finding the Fourth Proportional to 246.80, 339.22 and 217.52

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Solution

The fourth proportional to 246.80, 339.22 and 217.52 is: 298.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.80 : 339.22 = 217.52 : x
  2. Step 2: Convert to fraction form
    246.80/339.22 = 217.52/x
  3. Step 3: Cross multiply
    246.80x = 339.22 × 217.52
  4. Step 4: Simplify right side
    246.80x = 73,787.13
  5. Step 5: Solve for x
    x = 73,787.13/246.80
  6. Step 6: Final answer
    x = 298.98

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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.