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Finding the Fourth Proportional to 199.74, 276.02 and 162.88

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Solution

The fourth proportional to 199.74, 276.02 and 162.88 is: 225.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.74 : 276.02 = 162.88 : x
  2. Step 2: Convert to fraction form
    199.74/276.02 = 162.88/x
  3. Step 3: Cross multiply
    199.74x = 276.02 × 162.88
  4. Step 4: Simplify right side
    199.74x = 44,958.28
  5. Step 5: Solve for x
    x = 44,958.28/199.74
  6. Step 6: Final answer
    x = 225.09

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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.