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Finding the Fourth Proportional to 5.52, 7.62 and 3.09

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Solution

The fourth proportional to 5.52, 7.62 and 3.09 is: 4.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.52 : 7.62 = 3.09 : x
  2. Step 2: Convert to fraction form
    5.52/7.62 = 3.09/x
  3. Step 3: Cross multiply
    5.52x = 7.62 × 3.09
  4. Step 4: Simplify right side
    5.52x = 23.57
  5. Step 5: Solve for x
    x = 23.57/5.52
  6. Step 6: Final answer
    x = 4.27

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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.