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Finding the Fourth Proportional to 49.89, 74.52 and 49.65

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Solution

The fourth proportional to 49.89, 74.52 and 49.65 is: 74.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.89 : 74.52 = 49.65 : x
  2. Step 2: Convert to fraction form
    49.89/74.52 = 49.65/x
  3. Step 3: Cross multiply
    49.89x = 74.52 × 49.65
  4. Step 4: Simplify right side
    49.89x = 3,699.73
  5. Step 5: Solve for x
    x = 3,699.73/49.89
  6. Step 6: Final answer
    x = 74.16

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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.