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Finding the Fourth Proportional to 28.92, 43.55 and 26.92

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Solution

The fourth proportional to 28.92, 43.55 and 26.92 is: 40.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.92 : 43.55 = 26.92 : x
  2. Step 2: Convert to fraction form
    28.92/43.55 = 26.92/x
  3. Step 3: Cross multiply
    28.92x = 43.55 × 26.92
  4. Step 4: Simplify right side
    28.92x = 1,172.37
  5. Step 5: Solve for x
    x = 1,172.37/28.92
  6. Step 6: Final answer
    x = 40.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.