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Finding the Fourth Proportional to 246.47, 369.71 and 81.95

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Solution

The fourth proportional to 246.47, 369.71 and 81.95 is: 122.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.47 : 369.71 = 81.95 : x
  2. Step 2: Convert to fraction form
    246.47/369.71 = 81.95/x
  3. Step 3: Cross multiply
    246.47x = 369.71 × 81.95
  4. Step 4: Simplify right side
    246.47x = 30,299.29
  5. Step 5: Solve for x
    x = 30,299.29/246.47
  6. Step 6: Final answer
    x = 122.93

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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.