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Finding the Fourth Proportional to 50.69, 69.90 and 37.55

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Solution

The fourth proportional to 50.69, 69.90 and 37.55 is: 51.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.69 : 69.90 = 37.55 : x
  2. Step 2: Convert to fraction form
    50.69/69.90 = 37.55/x
  3. Step 3: Cross multiply
    50.69x = 69.90 × 37.55
  4. Step 4: Simplify right side
    50.69x = 2,624.84
  5. Step 5: Solve for x
    x = 2,624.84/50.69
  6. Step 6: Final answer
    x = 51.78

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Find fourth proportional to 25.34, 34.95 and 18.78
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.