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Finding the Fourth Proportional to 36.87, 50.88 and 20.50

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Solution

The fourth proportional to 36.87, 50.88 and 20.50 is: 28.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.87 : 50.88 = 20.50 : x
  2. Step 2: Convert to fraction form
    36.87/50.88 = 20.50/x
  3. Step 3: Cross multiply
    36.87x = 50.88 × 20.50
  4. Step 4: Simplify right side
    36.87x = 1,042.95
  5. Step 5: Solve for x
    x = 1,042.95/36.87
  6. Step 6: Final answer
    x = 28.29

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