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Finding the Fourth Proportional to 114.43, 171.74 and 107.22

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Solution

The fourth proportional to 114.43, 171.74 and 107.22 is: 160.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.43 : 171.74 = 107.22 : x
  2. Step 2: Convert to fraction form
    114.43/171.74 = 107.22/x
  3. Step 3: Cross multiply
    114.43x = 171.74 × 107.22
  4. Step 4: Simplify right side
    114.43x = 18,413.47
  5. Step 5: Solve for x
    x = 18,413.47/114.43
  6. Step 6: Final answer
    x = 160.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.