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Finding the Fourth Proportional to 199.94, 276.21 and 134.73

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Solution

The fourth proportional to 199.94, 276.21 and 134.73 is: 186.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.94 : 276.21 = 134.73 : x
  2. Step 2: Convert to fraction form
    199.94/276.21 = 134.73/x
  3. Step 3: Cross multiply
    199.94x = 276.21 × 134.73
  4. Step 4: Simplify right side
    199.94x = 37,213.77
  5. Step 5: Solve for x
    x = 37,213.77/199.94
  6. Step 6: Final answer
    x = 186.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.