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Finding the Fourth Proportional to 28.53, 42.55 and 24.28

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Solution

The fourth proportional to 28.53, 42.55 and 24.28 is: 36.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.53 : 42.55 = 24.28 : x
  2. Step 2: Convert to fraction form
    28.53/42.55 = 24.28/x
  3. Step 3: Cross multiply
    28.53x = 42.55 × 24.28
  4. Step 4: Simplify right side
    28.53x = 1,033.11
  5. Step 5: Solve for x
    x = 1,033.11/28.53
  6. Step 6: Final answer
    x = 36.21

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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.