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Finding the Fourth Proportional to 5.27, 7.28 and 2.97

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Solution

The fourth proportional to 5.27, 7.28 and 2.97 is: 4.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.27 : 7.28 = 2.97 : x
  2. Step 2: Convert to fraction form
    5.27/7.28 = 2.97/x
  3. Step 3: Cross multiply
    5.27x = 7.28 × 2.97
  4. Step 4: Simplify right side
    5.27x = 21.64
  5. Step 5: Solve for x
    x = 21.64/5.27
  6. Step 6: Final answer
    x = 4.10

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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.