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Finding the Fourth Proportional to 37.81, 51.85 and 34.16

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Solution

The fourth proportional to 37.81, 51.85 and 34.16 is: 46.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.81 : 51.85 = 34.16 : x
  2. Step 2: Convert to fraction form
    37.81/51.85 = 34.16/x
  3. Step 3: Cross multiply
    37.81x = 51.85 × 34.16
  4. Step 4: Simplify right side
    37.81x = 1,771.20
  5. Step 5: Solve for x
    x = 1,771.20/37.81
  6. Step 6: Final answer
    x = 46.84

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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.