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Finding the Fourth Proportional to 22.75, 33.93 and 21.10

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Solution

The fourth proportional to 22.75, 33.93 and 21.10 is: 31.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.75 : 33.93 = 21.10 : x
  2. Step 2: Convert to fraction form
    22.75/33.93 = 21.10/x
  3. Step 3: Cross multiply
    22.75x = 33.93 × 21.10
  4. Step 4: Simplify right side
    22.75x = 715.73
  5. Step 5: Solve for x
    x = 715.73/22.75
  6. Step 6: Final answer
    x = 31.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.