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Finding the Fourth Proportional to 114.97, 157.63 and 112.91

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Solution

The fourth proportional to 114.97, 157.63 and 112.91 is: 154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.97 : 157.63 = 112.91 : x
  2. Step 2: Convert to fraction form
    114.97/157.63 = 112.91/x
  3. Step 3: Cross multiply
    114.97x = 157.63 × 112.91
  4. Step 4: Simplify right side
    114.97x = 17,797.44
  5. Step 5: Solve for x
    x = 17,797.44/114.97
  6. Step 6: Final answer
    x = 154.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.