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Finding the Fourth Proportional to 114.89, 158.48 and 82.19

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Solution

The fourth proportional to 114.89, 158.48 and 82.19 is: 113.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.89 : 158.48 = 82.19 : x
  2. Step 2: Convert to fraction form
    114.89/158.48 = 82.19/x
  3. Step 3: Cross multiply
    114.89x = 158.48 × 82.19
  4. Step 4: Simplify right side
    114.89x = 13,025.47
  5. Step 5: Solve for x
    x = 13,025.47/114.89
  6. Step 6: Final answer
    x = 113.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.