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Finding the Fourth Proportional to 36.16, 54.05 and 28.06

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Solution

The fourth proportional to 36.16, 54.05 and 28.06 is: 41.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.16 : 54.05 = 28.06 : x
  2. Step 2: Convert to fraction form
    36.16/54.05 = 28.06/x
  3. Step 3: Cross multiply
    36.16x = 54.05 × 28.06
  4. Step 4: Simplify right side
    36.16x = 1,516.64
  5. Step 5: Solve for x
    x = 1,516.64/36.16
  6. Step 6: Final answer
    x = 41.94

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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.