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Finding the Fourth Proportional to 8.52, 11.74 and 8.34

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Solution

The fourth proportional to 8.52, 11.74 and 8.34 is: 11.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.52 : 11.74 = 8.34 : x
  2. Step 2: Convert to fraction form
    8.52/11.74 = 8.34/x
  3. Step 3: Cross multiply
    8.52x = 11.74 × 8.34
  4. Step 4: Simplify right side
    8.52x = 97.91
  5. Step 5: Solve for x
    x = 97.91/8.52
  6. Step 6: Final answer
    x = 11.49

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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.