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Finding the Fourth Proportional to 37.56, 51.60 and 34.80

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Solution

The fourth proportional to 37.56, 51.60 and 34.80 is: 47.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.56 : 51.60 = 34.80 : x
  2. Step 2: Convert to fraction form
    37.56/51.60 = 34.80/x
  3. Step 3: Cross multiply
    37.56x = 51.60 × 34.80
  4. Step 4: Simplify right side
    37.56x = 1,795.68
  5. Step 5: Solve for x
    x = 1,795.68/37.56
  6. Step 6: Final answer
    x = 47.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.