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Finding the Fourth Proportional to 49.25, 73.41 and 48.74

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Solution

The fourth proportional to 49.25, 73.41 and 48.74 is: 72.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.25 : 73.41 = 48.74 : x
  2. Step 2: Convert to fraction form
    49.25/73.41 = 48.74/x
  3. Step 3: Cross multiply
    49.25x = 73.41 × 48.74
  4. Step 4: Simplify right side
    49.25x = 3,577.64
  5. Step 5: Solve for x
    x = 3,577.64/49.25
  6. Step 6: Final answer
    x = 72.65

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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.