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Finding the Fourth Proportional to 246.66, 369.42 and 138.18

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Solution

The fourth proportional to 246.66, 369.42 and 138.18 is: 206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.66 : 369.42 = 138.18 : x
  2. Step 2: Convert to fraction form
    246.66/369.42 = 138.18/x
  3. Step 3: Cross multiply
    246.66x = 369.42 × 138.18
  4. Step 4: Simplify right side
    246.66x = 51,046.46
  5. Step 5: Solve for x
    x = 51,046.46/246.66
  6. Step 6: Final answer
    x = 206.95

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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.