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Finding the Fourth Proportional to 159.49, 220.08 and 94

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Solution

The fourth proportional to 159.49, 220.08 and 94 is: 129.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.49 : 220.08 = 94 : x
  2. Step 2: Convert to fraction form
    159.49/220.08 = 94/x
  3. Step 3: Cross multiply
    159.49x = 220.08 × 94
  4. Step 4: Simplify right side
    159.49x = 20,687.05
  5. Step 5: Solve for x
    x = 20,687.05/159.49
  6. Step 6: Final answer
    x = 129.71

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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.