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Finding the Fourth Proportional to 43.56, 60.09 and 27.99

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Solution

The fourth proportional to 43.56, 60.09 and 27.99 is: 38.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.56 : 60.09 = 27.99 : x
  2. Step 2: Convert to fraction form
    43.56/60.09 = 27.99/x
  3. Step 3: Cross multiply
    43.56x = 60.09 × 27.99
  4. Step 4: Simplify right side
    43.56x = 1,682.01
  5. Step 5: Solve for x
    x = 1,682.01/43.56
  6. Step 6: Final answer
    x = 38.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.