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Finding the Fourth Proportional to 5.49, 8.19 and 4.36

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Solution

The fourth proportional to 5.49, 8.19 and 4.36 is: 6.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.49 : 8.19 = 4.36 : x
  2. Step 2: Convert to fraction form
    5.49/8.19 = 4.36/x
  3. Step 3: Cross multiply
    5.49x = 8.19 × 4.36
  4. Step 4: Simplify right side
    5.49x = 35.68
  5. Step 5: Solve for x
    x = 35.68/5.49
  6. Step 6: Final answer
    x = 6.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.