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Finding the Fourth Proportional to 17.66, 26.31 and 17.16

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Solution

The fourth proportional to 17.66, 26.31 and 17.16 is: 25.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.66 : 26.31 = 17.16 : x
  2. Step 2: Convert to fraction form
    17.66/26.31 = 17.16/x
  3. Step 3: Cross multiply
    17.66x = 26.31 × 17.16
  4. Step 4: Simplify right side
    17.66x = 451.48
  5. Step 5: Solve for x
    x = 451.48/17.66
  6. Step 6: Final answer
    x = 25.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.