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Finding the Fourth Proportional to 28.31, 42.26 and 24.26

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Solution

The fourth proportional to 28.31, 42.26 and 24.26 is: 36.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.31 : 42.26 = 24.26 : x
  2. Step 2: Convert to fraction form
    28.31/42.26 = 24.26/x
  3. Step 3: Cross multiply
    28.31x = 42.26 × 24.26
  4. Step 4: Simplify right side
    28.31x = 1,025.23
  5. Step 5: Solve for x
    x = 1,025.23/28.31
  6. Step 6: Final answer
    x = 36.21

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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.