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Finding the Fourth Proportional to 235.25, 324.52 and 142.03

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Solution

The fourth proportional to 235.25, 324.52 and 142.03 is: 195.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.25 : 324.52 = 142.03 : x
  2. Step 2: Convert to fraction form
    235.25/324.52 = 142.03/x
  3. Step 3: Cross multiply
    235.25x = 324.52 × 142.03
  4. Step 4: Simplify right side
    235.25x = 46,091.63
  5. Step 5: Solve for x
    x = 46,091.63/235.25
  6. Step 6: Final answer
    x = 195.93

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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.