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Finding the Fourth Proportional to 17.06, 25.62 and 6.91

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Solution

The fourth proportional to 17.06, 25.62 and 6.91 is: 10.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.06 : 25.62 = 6.91 : x
  2. Step 2: Convert to fraction form
    17.06/25.62 = 6.91/x
  3. Step 3: Cross multiply
    17.06x = 25.62 × 6.91
  4. Step 4: Simplify right side
    17.06x = 177.02
  5. Step 5: Solve for x
    x = 177.02/17.06
  6. Step 6: Final answer
    x = 10.38

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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.