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Finding the Fourth Proportional to 246.32, 369.52 and 81.74

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Solution

The fourth proportional to 246.32, 369.52 and 81.74 is: 122.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.32 : 369.52 = 81.74 : x
  2. Step 2: Convert to fraction form
    246.32/369.52 = 81.74/x
  3. Step 3: Cross multiply
    246.32x = 369.52 × 81.74
  4. Step 4: Simplify right side
    246.32x = 30,204.56
  5. Step 5: Solve for x
    x = 30,204.56/246.32
  6. Step 6: Final answer
    x = 122.62

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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.