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Finding the Fourth Proportional to 49.65, 74.45 and 27.99

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Solution

The fourth proportional to 49.65, 74.45 and 27.99 is: 41.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.65 : 74.45 = 27.99 : x
  2. Step 2: Convert to fraction form
    49.65/74.45 = 27.99/x
  3. Step 3: Cross multiply
    49.65x = 74.45 × 27.99
  4. Step 4: Simplify right side
    49.65x = 2,083.72
  5. Step 5: Solve for x
    x = 2,083.72/49.65
  6. Step 6: Final answer
    x = 41.97

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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.