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Finding the Fourth Proportional to 22.25, 33.55 and 21.84

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Solution

The fourth proportional to 22.25, 33.55 and 21.84 is: 32.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.25 : 33.55 = 21.84 : x
  2. Step 2: Convert to fraction form
    22.25/33.55 = 21.84/x
  3. Step 3: Cross multiply
    22.25x = 33.55 × 21.84
  4. Step 4: Simplify right side
    22.25x = 732.62
  5. Step 5: Solve for x
    x = 732.62/22.25
  6. Step 6: Final answer
    x = 32.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.