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Finding the Fourth Proportional to 22.23, 30.44 and 21.42

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Solution

The fourth proportional to 22.23, 30.44 and 21.42 is: 29.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.23 : 30.44 = 21.42 : x
  2. Step 2: Convert to fraction form
    22.23/30.44 = 21.42/x
  3. Step 3: Cross multiply
    22.23x = 30.44 × 21.42
  4. Step 4: Simplify right side
    22.23x = 651.92
  5. Step 5: Solve for x
    x = 651.92/22.23
  6. Step 6: Final answer
    x = 29.33

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.