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Finding the Fourth Proportional to 2.77, 3.81 and 2.48

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Solution

The fourth proportional to 2.77, 3.81 and 2.48 is: 3.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.77 : 3.81 = 2.48 : x
  2. Step 2: Convert to fraction form
    2.77/3.81 = 2.48/x
  3. Step 3: Cross multiply
    2.77x = 3.81 × 2.48
  4. Step 4: Simplify right side
    2.77x = 9.42
  5. Step 5: Solve for x
    x = 9.42/2.77
  6. Step 6: Final answer
    x = 3.41

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Find fourth proportional to 1.38, 1.90 and 1.24
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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.