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Finding the Fourth Proportional to 10.71, 16.08 and 6.72

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Solution

The fourth proportional to 10.71, 16.08 and 6.72 is: 10.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.71 : 16.08 = 6.72 : x
  2. Step 2: Convert to fraction form
    10.71/16.08 = 6.72/x
  3. Step 3: Cross multiply
    10.71x = 16.08 × 6.72
  4. Step 4: Simplify right side
    10.71x = 108.06
  5. Step 5: Solve for x
    x = 108.06/10.71
  6. Step 6: Final answer
    x = 10.09

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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.