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Finding the Fourth Proportional to 28.84, 43.06 and 28.03

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Solution

The fourth proportional to 28.84, 43.06 and 28.03 is: 41.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.84 : 43.06 = 28.03 : x
  2. Step 2: Convert to fraction form
    28.84/43.06 = 28.03/x
  3. Step 3: Cross multiply
    28.84x = 43.06 × 28.03
  4. Step 4: Simplify right side
    28.84x = 1,206.97
  5. Step 5: Solve for x
    x = 1,206.97/28.84
  6. Step 6: Final answer
    x = 41.85

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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.