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Finding the Fourth Proportional to 36.60, 50.80 and 36.12

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Solution

The fourth proportional to 36.60, 50.80 and 36.12 is: 50.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.60 : 50.80 = 36.12 : x
  2. Step 2: Convert to fraction form
    36.60/50.80 = 36.12/x
  3. Step 3: Cross multiply
    36.60x = 50.80 × 36.12
  4. Step 4: Simplify right side
    36.60x = 1,834.90
  5. Step 5: Solve for x
    x = 1,834.90/36.60
  6. Step 6: Final answer
    x = 50.13

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.