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Finding the Fourth Proportional to 17.08, 23.60 and 13.19

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Solution

The fourth proportional to 17.08, 23.60 and 13.19 is: 18.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.08 : 23.60 = 13.19 : x
  2. Step 2: Convert to fraction form
    17.08/23.60 = 13.19/x
  3. Step 3: Cross multiply
    17.08x = 23.60 × 13.19
  4. Step 4: Simplify right side
    17.08x = 311.28
  5. Step 5: Solve for x
    x = 311.28/17.08
  6. Step 6: Final answer
    x = 18.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.