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Finding the Fourth Proportional to 34.36, 51.17 and 34.12

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Solution

The fourth proportional to 34.36, 51.17 and 34.12 is: 50.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.36 : 51.17 = 34.12 : x
  2. Step 2: Convert to fraction form
    34.36/51.17 = 34.12/x
  3. Step 3: Cross multiply
    34.36x = 51.17 × 34.12
  4. Step 4: Simplify right side
    34.36x = 1,745.92
  5. Step 5: Solve for x
    x = 1,745.92/34.36
  6. Step 6: Final answer
    x = 50.81

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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.