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Finding the Fourth Proportional to 114.75, 171.42 and 75.93

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Solution

The fourth proportional to 114.75, 171.42 and 75.93 is: 113.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.75 : 171.42 = 75.93 : x
  2. Step 2: Convert to fraction form
    114.75/171.42 = 75.93/x
  3. Step 3: Cross multiply
    114.75x = 171.42 × 75.93
  4. Step 4: Simplify right side
    114.75x = 13,015.92
  5. Step 5: Solve for x
    x = 13,015.92/114.75
  6. Step 6: Final answer
    x = 113.43

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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.