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Finding the Fourth Proportional to 50.66, 69.51 and 49.92

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Solution

The fourth proportional to 50.66, 69.51 and 49.92 is: 68.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.66 : 69.51 = 49.92 : x
  2. Step 2: Convert to fraction form
    50.66/69.51 = 49.92/x
  3. Step 3: Cross multiply
    50.66x = 69.51 × 49.92
  4. Step 4: Simplify right side
    50.66x = 3,469.94
  5. Step 5: Solve for x
    x = 3,469.94/50.66
  6. Step 6: Final answer
    x = 68.50

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.