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Finding the Fourth Proportional to 114.62, 170.71 and 111.43

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Solution

The fourth proportional to 114.62, 170.71 and 111.43 is: 165.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.62 : 170.71 = 111.43 : x
  2. Step 2: Convert to fraction form
    114.62/170.71 = 111.43/x
  3. Step 3: Cross multiply
    114.62x = 170.71 × 111.43
  4. Step 4: Simplify right side
    114.62x = 19,021.36
  5. Step 5: Solve for x
    x = 19,021.36/114.62
  6. Step 6: Final answer
    x = 165.95

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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.