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Finding the Fourth Proportional to 37.80, 56.36 and 36.69

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Solution

The fourth proportional to 37.80, 56.36 and 36.69 is: 54.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.80 : 56.36 = 36.69 : x
  2. Step 2: Convert to fraction form
    37.80/56.36 = 36.69/x
  3. Step 3: Cross multiply
    37.80x = 56.36 × 36.69
  4. Step 4: Simplify right side
    37.80x = 2,067.73
  5. Step 5: Solve for x
    x = 2,067.73/37.80
  6. Step 6: Final answer
    x = 54.70

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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.