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Finding the Fourth Proportional to 37.11, 55.67 and 28.15

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Solution

The fourth proportional to 37.11, 55.67 and 28.15 is: 42.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.11 : 55.67 = 28.15 : x
  2. Step 2: Convert to fraction form
    37.11/55.67 = 28.15/x
  3. Step 3: Cross multiply
    37.11x = 55.67 × 28.15
  4. Step 4: Simplify right side
    37.11x = 1,567.25
  5. Step 5: Solve for x
    x = 1,567.25/37.11
  6. Step 6: Final answer
    x = 42.23

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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.