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Finding the Fourth Proportional to 34.05, 51.08 and 12.67

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Solution

The fourth proportional to 34.05, 51.08 and 12.67 is: 19.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.05 : 51.08 = 12.67 : x
  2. Step 2: Convert to fraction form
    34.05/51.08 = 12.67/x
  3. Step 3: Cross multiply
    34.05x = 51.08 × 12.67
  4. Step 4: Simplify right side
    34.05x = 647.12
  5. Step 5: Solve for x
    x = 647.12/34.05
  6. Step 6: Final answer
    x = 19.01

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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.