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Finding the Fourth Proportional to 114.97, 157.64 and 111.55

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Solution

The fourth proportional to 114.97, 157.64 and 111.55 is: 152.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.97 : 157.64 = 111.55 : x
  2. Step 2: Convert to fraction form
    114.97/157.64 = 111.55/x
  3. Step 3: Cross multiply
    114.97x = 157.64 × 111.55
  4. Step 4: Simplify right side
    114.97x = 17,584.94
  5. Step 5: Solve for x
    x = 17,584.94/114.97
  6. Step 6: Final answer
    x = 152.96

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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.