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Finding the Fourth Proportional to 168.36, 233.98 and 166.40

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Solution

The fourth proportional to 168.36, 233.98 and 166.40 is: 231.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.36 : 233.98 = 166.40 : x
  2. Step 2: Convert to fraction form
    168.36/233.98 = 166.40/x
  3. Step 3: Cross multiply
    168.36x = 233.98 × 166.40
  4. Step 4: Simplify right side
    168.36x = 38,934.27
  5. Step 5: Solve for x
    x = 38,934.27/168.36
  6. Step 6: Final answer
    x = 231.26

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.