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Finding the Fourth Proportional to 17.10, 25.50 and 15.18

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Solution

The fourth proportional to 17.10, 25.50 and 15.18 is: 22.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.10 : 25.50 = 15.18 : x
  2. Step 2: Convert to fraction form
    17.10/25.50 = 15.18/x
  3. Step 3: Cross multiply
    17.10x = 25.50 × 15.18
  4. Step 4: Simplify right side
    17.10x = 387.09
  5. Step 5: Solve for x
    x = 387.09/17.10
  6. Step 6: Final answer
    x = 22.64

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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.