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Finding the Fourth Proportional to 49.95, 74.39 and 44.91

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Solution

The fourth proportional to 49.95, 74.39 and 44.91 is: 66.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.95 : 74.39 = 44.91 : x
  2. Step 2: Convert to fraction form
    49.95/74.39 = 44.91/x
  3. Step 3: Cross multiply
    49.95x = 74.39 × 44.91
  4. Step 4: Simplify right side
    49.95x = 3,340.63
  5. Step 5: Solve for x
    x = 3,340.63/49.95
  6. Step 6: Final answer
    x = 66.88

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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.