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Finding the Fourth Proportional to 199.74, 276.12 and 181.74

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Solution

The fourth proportional to 199.74, 276.12 and 181.74 is: 251.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.74 : 276.12 = 181.74 : x
  2. Step 2: Convert to fraction form
    199.74/276.12 = 181.74/x
  3. Step 3: Cross multiply
    199.74x = 276.12 × 181.74
  4. Step 4: Simplify right side
    199.74x = 50,182.05
  5. Step 5: Solve for x
    x = 50,182.05/199.74
  6. Step 6: Final answer
    x = 251.24

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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.