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Finding the Fourth Proportional to 33.32, 45.96 and 22.40

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Solution

The fourth proportional to 33.32, 45.96 and 22.40 is: 30.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.32 : 45.96 = 22.40 : x
  2. Step 2: Convert to fraction form
    33.32/45.96 = 22.40/x
  3. Step 3: Cross multiply
    33.32x = 45.96 × 22.40
  4. Step 4: Simplify right side
    33.32x = 1,029.27
  5. Step 5: Solve for x
    x = 1,029.27/33.32
  6. Step 6: Final answer
    x = 30.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.