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Finding the Fourth Proportional to 28.63, 43.13 and 22.66

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Solution

The fourth proportional to 28.63, 43.13 and 22.66 is: 34.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.63 : 43.13 = 22.66 : x
  2. Step 2: Convert to fraction form
    28.63/43.13 = 22.66/x
  3. Step 3: Cross multiply
    28.63x = 43.13 × 22.66
  4. Step 4: Simplify right side
    28.63x = 977.33
  5. Step 5: Solve for x
    x = 977.33/28.63
  6. Step 6: Final answer
    x = 34.14

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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.