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Finding the Fourth Proportional to 246.42, 369.31 and 109.31

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Solution

The fourth proportional to 246.42, 369.31 and 109.31 is: 163.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.42 : 369.31 = 109.31 : x
  2. Step 2: Convert to fraction form
    246.42/369.31 = 109.31/x
  3. Step 3: Cross multiply
    246.42x = 369.31 × 109.31
  4. Step 4: Simplify right side
    246.42x = 40,369.28
  5. Step 5: Solve for x
    x = 40,369.28/246.42
  6. Step 6: Final answer
    x = 163.82

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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.