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Finding the Fourth Proportional to 39.25, 59.20 and 37.81

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Solution

The fourth proportional to 39.25, 59.20 and 37.81 is: 57.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.25 : 59.20 = 37.81 : x
  2. Step 2: Convert to fraction form
    39.25/59.20 = 37.81/x
  3. Step 3: Cross multiply
    39.25x = 59.20 × 37.81
  4. Step 4: Simplify right side
    39.25x = 2,238.35
  5. Step 5: Solve for x
    x = 2,238.35/39.25
  6. Step 6: Final answer
    x = 57.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.