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Finding the Fourth Proportional to 34, 50.96 and 18.78

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Solution

The fourth proportional to 34, 50.96 and 18.78 is: 28.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    34 : 50.96 = 18.78 : x
  2. Step 2: Convert to fraction form
    34/50.96 = 18.78/x
  3. Step 3: Cross multiply
    34x = 50.96 × 18.78
  4. Step 4: Simplify right side
    34x = 956.77
  5. Step 5: Solve for x
    x = 956.77/34
  6. Step 6: Final answer
    x = 28.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.