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Finding the Fourth Proportional to 38.20, 53.06 and 37.83

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Solution

The fourth proportional to 38.20, 53.06 and 37.83 is: 52.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.20 : 53.06 = 37.83 : x
  2. Step 2: Convert to fraction form
    38.20/53.06 = 37.83/x
  3. Step 3: Cross multiply
    38.20x = 53.06 × 37.83
  4. Step 4: Simplify right side
    38.20x = 2,006.99
  5. Step 5: Solve for x
    x = 2,006.99/38.20
  6. Step 6: Final answer
    x = 52.55

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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.