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Finding the Fourth Proportional to 246.76, 339.84 and 220.42

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Solution

The fourth proportional to 246.76, 339.84 and 220.42 is: 303.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.76 : 339.84 = 220.42 : x
  2. Step 2: Convert to fraction form
    246.76/339.84 = 220.42/x
  3. Step 3: Cross multiply
    246.76x = 339.84 × 220.42
  4. Step 4: Simplify right side
    246.76x = 74,907.53
  5. Step 5: Solve for x
    x = 74,907.53/246.76
  6. Step 6: Final answer
    x = 303.56

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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.