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Finding the Fourth Proportional to 28.23, 42.07 and 27.27

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Solution

The fourth proportional to 28.23, 42.07 and 27.27 is: 40.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.23 : 42.07 = 27.27 : x
  2. Step 2: Convert to fraction form
    28.23/42.07 = 27.27/x
  3. Step 3: Cross multiply
    28.23x = 42.07 × 27.27
  4. Step 4: Simplify right side
    28.23x = 1,147.25
  5. Step 5: Solve for x
    x = 1,147.25/28.23
  6. Step 6: Final answer
    x = 40.64

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1.5x scale

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.