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Finding the Fourth Proportional to 114.27, 171.47 and 75.79

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Solution

The fourth proportional to 114.27, 171.47 and 75.79 is: 113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.27 : 171.47 = 75.79 : x
  2. Step 2: Convert to fraction form
    114.27/171.47 = 75.79/x
  3. Step 3: Cross multiply
    114.27x = 171.47 × 75.79
  4. Step 4: Simplify right side
    114.27x = 12,995.71
  5. Step 5: Solve for x
    x = 12,995.71/114.27
  6. Step 6: Final answer
    x = 113.73

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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.