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Finding the Fourth Proportional to 50, 75.01 and 27.21

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Solution

The fourth proportional to 50, 75.01 and 27.21 is: 40.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    50 : 75.01 = 27.21 : x
  2. Step 2: Convert to fraction form
    50/75.01 = 27.21/x
  3. Step 3: Cross multiply
    50x = 75.01 × 27.21
  4. Step 4: Simplify right side
    50x = 2,040.65
  5. Step 5: Solve for x
    x = 2,040.65/50
  6. Step 6: Final answer
    x = 40.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.