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Finding the Fourth Proportional to 28.06, 41.72 and 26.14

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Solution

The fourth proportional to 28.06, 41.72 and 26.14 is: 38.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.06 : 41.72 = 26.14 : x
  2. Step 2: Convert to fraction form
    28.06/41.72 = 26.14/x
  3. Step 3: Cross multiply
    28.06x = 41.72 × 26.14
  4. Step 4: Simplify right side
    28.06x = 1,090.56
  5. Step 5: Solve for x
    x = 1,090.56/28.06
  6. Step 6: Final answer
    x = 38.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.