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Finding the Fourth Proportional to 3.05, 4.19 and 2.51

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Solution

The fourth proportional to 3.05, 4.19 and 2.51 is: 3.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.05 : 4.19 = 2.51 : x
  2. Step 2: Convert to fraction form
    3.05/4.19 = 2.51/x
  3. Step 3: Cross multiply
    3.05x = 4.19 × 2.51
  4. Step 4: Simplify right side
    3.05x = 10.53
  5. Step 5: Solve for x
    x = 10.53/3.05
  6. Step 6: Final answer
    x = 3.45

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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.