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Finding the Fourth Proportional to 114.99, 171.32 and 113.86

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Solution

The fourth proportional to 114.99, 171.32 and 113.86 is: 169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.99 : 171.32 = 113.86 : x
  2. Step 2: Convert to fraction form
    114.99/171.32 = 113.86/x
  3. Step 3: Cross multiply
    114.99x = 171.32 × 113.86
  4. Step 4: Simplify right side
    114.99x = 19,505.18
  5. Step 5: Solve for x
    x = 19,505.18/114.99
  6. Step 6: Final answer
    x = 169.63

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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.