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Finding the Fourth Proportional to 28.95, 43.25 and 22.87

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Solution

The fourth proportional to 28.95, 43.25 and 22.87 is: 34.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.95 : 43.25 = 22.87 : x
  2. Step 2: Convert to fraction form
    28.95/43.25 = 22.87/x
  3. Step 3: Cross multiply
    28.95x = 43.25 × 22.87
  4. Step 4: Simplify right side
    28.95x = 989.13
  5. Step 5: Solve for x
    x = 989.13/28.95
  6. Step 6: Final answer
    x = 34.17

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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.