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Finding the Fourth Proportional to 246.39, 339.90 and 159.05

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Solution

The fourth proportional to 246.39, 339.90 and 159.05 is: 219.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.39 : 339.90 = 159.05 : x
  2. Step 2: Convert to fraction form
    246.39/339.90 = 159.05/x
  3. Step 3: Cross multiply
    246.39x = 339.90 × 159.05
  4. Step 4: Simplify right side
    246.39x = 54,059.40
  5. Step 5: Solve for x
    x = 54,059.40/246.39
  6. Step 6: Final answer
    x = 219.41

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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.