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Finding the Fourth Proportional to 246, 369.40 and 205.72

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Solution

The fourth proportional to 246, 369.40 and 205.72 is: 308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    246 : 369.40 = 205.72 : x
  2. Step 2: Convert to fraction form
    246/369.40 = 205.72/x
  3. Step 3: Cross multiply
    246x = 369.40 × 205.72
  4. Step 4: Simplify right side
    246x = 75,992.97
  5. Step 5: Solve for x
    x = 75,992.97/246
  6. Step 6: Final answer
    x = 308.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.