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Finding the Fourth Proportional to 33.03, 49.31 and 28.47

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Solution

The fourth proportional to 33.03, 49.31 and 28.47 is: 42.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.03 : 49.31 = 28.47 : x
  2. Step 2: Convert to fraction form
    33.03/49.31 = 28.47/x
  3. Step 3: Cross multiply
    33.03x = 49.31 × 28.47
  4. Step 4: Simplify right side
    33.03x = 1,403.71
  5. Step 5: Solve for x
    x = 1,403.71/33.03
  6. Step 6: Final answer
    x = 42.50

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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.