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Finding the Fourth Proportional to 18.10, 27.31 and 17.26

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Solution

The fourth proportional to 18.10, 27.31 and 17.26 is: 26.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.10 : 27.31 = 17.26 : x
  2. Step 2: Convert to fraction form
    18.10/27.31 = 17.26/x
  3. Step 3: Cross multiply
    18.10x = 27.31 × 17.26
  4. Step 4: Simplify right side
    18.10x = 471.37
  5. Step 5: Solve for x
    x = 471.37/18.10
  6. Step 6: Final answer
    x = 26.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.