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Finding the Fourth Proportional to 49.98, 74.88 and 25.92

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Solution

The fourth proportional to 49.98, 74.88 and 25.92 is: 38.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.98 : 74.88 = 25.92 : x
  2. Step 2: Convert to fraction form
    49.98/74.88 = 25.92/x
  3. Step 3: Cross multiply
    49.98x = 74.88 × 25.92
  4. Step 4: Simplify right side
    49.98x = 1,940.89
  5. Step 5: Solve for x
    x = 1,940.89/49.98
  6. Step 6: Final answer
    x = 38.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.