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Finding the Fourth Proportional to 36.05, 54.02 and 25.20

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Solution

The fourth proportional to 36.05, 54.02 and 25.20 is: 37.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.05 : 54.02 = 25.20 : x
  2. Step 2: Convert to fraction form
    36.05/54.02 = 25.20/x
  3. Step 3: Cross multiply
    36.05x = 54.02 × 25.20
  4. Step 4: Simplify right side
    36.05x = 1,361.37
  5. Step 5: Solve for x
    x = 1,361.37/36.05
  6. Step 6: Final answer
    x = 37.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.