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Finding the Fourth Proportional to 22.16, 33.44 and 21.33

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Solution

The fourth proportional to 22.16, 33.44 and 21.33 is: 32.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.16 : 33.44 = 21.33 : x
  2. Step 2: Convert to fraction form
    22.16/33.44 = 21.33/x
  3. Step 3: Cross multiply
    22.16x = 33.44 × 21.33
  4. Step 4: Simplify right side
    22.16x = 713.28
  5. Step 5: Solve for x
    x = 713.28/22.16
  6. Step 6: Final answer
    x = 32.19

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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.