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Finding the Fourth Proportional to 5.49, 8.25 and 3.24

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Solution

The fourth proportional to 5.49, 8.25 and 3.24 is: 4.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.49 : 8.25 = 3.24 : x
  2. Step 2: Convert to fraction form
    5.49/8.25 = 3.24/x
  3. Step 3: Cross multiply
    5.49x = 8.25 × 3.24
  4. Step 4: Simplify right side
    5.49x = 26.74
  5. Step 5: Solve for x
    x = 26.74/5.49
  6. Step 6: Final answer
    x = 4.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.