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Finding the Fourth Proportional to 3.88, 5.33 and 3.43

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Solution

The fourth proportional to 3.88, 5.33 and 3.43 is: 4.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.88 : 5.33 = 3.43 : x
  2. Step 2: Convert to fraction form
    3.88/5.33 = 3.43/x
  3. Step 3: Cross multiply
    3.88x = 5.33 × 3.43
  4. Step 4: Simplify right side
    3.88x = 18.27
  5. Step 5: Solve for x
    x = 18.27/3.88
  6. Step 6: Final answer
    x = 4.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.