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Finding the Fourth Proportional to 37.47, 55.90 and 36.78

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Solution

The fourth proportional to 37.47, 55.90 and 36.78 is: 54.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.47 : 55.90 = 36.78 : x
  2. Step 2: Convert to fraction form
    37.47/55.90 = 36.78/x
  3. Step 3: Cross multiply
    37.47x = 55.90 × 36.78
  4. Step 4: Simplify right side
    37.47x = 2,056.00
  5. Step 5: Solve for x
    x = 2,056.00/37.47
  6. Step 6: Final answer
    x = 54.87

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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.