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Finding the Fourth Proportional to 28.81, 39.77 and 27.10

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Solution

The fourth proportional to 28.81, 39.77 and 27.10 is: 37.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.81 : 39.77 = 27.10 : x
  2. Step 2: Convert to fraction form
    28.81/39.77 = 27.10/x
  3. Step 3: Cross multiply
    28.81x = 39.77 × 27.10
  4. Step 4: Simplify right side
    28.81x = 1,077.77
  5. Step 5: Solve for x
    x = 1,077.77/28.81
  6. Step 6: Final answer
    x = 37.41

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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.