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Finding the Fourth Proportional to 50.92, 69.80 and 50.68

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Solution

The fourth proportional to 50.92, 69.80 and 50.68 is: 69.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.92 : 69.80 = 50.68 : x
  2. Step 2: Convert to fraction form
    50.92/69.80 = 50.68/x
  3. Step 3: Cross multiply
    50.92x = 69.80 × 50.68
  4. Step 4: Simplify right side
    50.92x = 3,537.46
  5. Step 5: Solve for x
    x = 3,537.46/50.92
  6. Step 6: Final answer
    x = 69.47

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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.