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Finding the Fourth Proportional to 235.51, 324.49 and 169.90

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Solution

The fourth proportional to 235.51, 324.49 and 169.90 is: 234.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.51 : 324.49 = 169.90 : x
  2. Step 2: Convert to fraction form
    235.51/324.49 = 169.90/x
  3. Step 3: Cross multiply
    235.51x = 324.49 × 169.90
  4. Step 4: Simplify right side
    235.51x = 55,130.85
  5. Step 5: Solve for x
    x = 55,130.85/235.51
  6. Step 6: Final answer
    x = 234.09

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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.