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Finding the Fourth Proportional to 24.09, 33.09 and 20.45

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Solution

The fourth proportional to 24.09, 33.09 and 20.45 is: 28.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.09 : 33.09 = 20.45 : x
  2. Step 2: Convert to fraction form
    24.09/33.09 = 20.45/x
  3. Step 3: Cross multiply
    24.09x = 33.09 × 20.45
  4. Step 4: Simplify right side
    24.09x = 676.53
  5. Step 5: Solve for x
    x = 676.53/24.09
  6. Step 6: Final answer
    x = 28.08

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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.