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Finding the Fourth Proportional to 115.26, 159.04 and 68.62

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Solution

The fourth proportional to 115.26, 159.04 and 68.62 is: 94.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.26 : 159.04 = 68.62 : x
  2. Step 2: Convert to fraction form
    115.26/159.04 = 68.62/x
  3. Step 3: Cross multiply
    115.26x = 159.04 × 68.62
  4. Step 4: Simplify right side
    115.26x = 10,913.32
  5. Step 5: Solve for x
    x = 10,913.32/115.26
  6. Step 6: Final answer
    x = 94.68

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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.