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Finding the Fourth Proportional to 33.21, 49.75 and 18.02

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Solution

The fourth proportional to 33.21, 49.75 and 18.02 is: 27.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.21 : 49.75 = 18.02 : x
  2. Step 2: Convert to fraction form
    33.21/49.75 = 18.02/x
  3. Step 3: Cross multiply
    33.21x = 49.75 × 18.02
  4. Step 4: Simplify right side
    33.21x = 896.57
  5. Step 5: Solve for x
    x = 896.57/33.21
  6. Step 6: Final answer
    x = 27.00

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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.