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Finding the Fourth Proportional to 159.26, 219.79 and 93.77

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Solution

The fourth proportional to 159.26, 219.79 and 93.77 is: 129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.26 : 219.79 = 93.77 : x
  2. Step 2: Convert to fraction form
    159.26/219.79 = 93.77/x
  3. Step 3: Cross multiply
    159.26x = 219.79 × 93.77
  4. Step 4: Simplify right side
    159.26x = 20,610.52
  5. Step 5: Solve for x
    x = 20,610.52/159.26
  6. Step 6: Final answer
    x = 129.42

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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.