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Finding the Fourth Proportional to 155.93, 234.09 and 112.59

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Solution

The fourth proportional to 155.93, 234.09 and 112.59 is: 169.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.93 : 234.09 = 112.59 : x
  2. Step 2: Convert to fraction form
    155.93/234.09 = 112.59/x
  3. Step 3: Cross multiply
    155.93x = 234.09 × 112.59
  4. Step 4: Simplify right side
    155.93x = 26,356.19
  5. Step 5: Solve for x
    x = 26,356.19/155.93
  6. Step 6: Final answer
    x = 169.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.