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Finding the Fourth Proportional to 4.88, 6.73 and 2.72

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Solution

The fourth proportional to 4.88, 6.73 and 2.72 is: 3.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.88 : 6.73 = 2.72 : x
  2. Step 2: Convert to fraction form
    4.88/6.73 = 2.72/x
  3. Step 3: Cross multiply
    4.88x = 6.73 × 2.72
  4. Step 4: Simplify right side
    4.88x = 18.29
  5. Step 5: Solve for x
    x = 18.29/4.88
  6. Step 6: Final answer
    x = 3.75

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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.