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Finding the Fourth Proportional to 235.26, 324.55 and 142.01

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Solution

The fourth proportional to 235.26, 324.55 and 142.01 is: 195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.26 : 324.55 = 142.01 : x
  2. Step 2: Convert to fraction form
    235.26/324.55 = 142.01/x
  3. Step 3: Cross multiply
    235.26x = 324.55 × 142.01
  4. Step 4: Simplify right side
    235.26x = 46,088.18
  5. Step 5: Solve for x
    x = 46,088.18/235.26
  6. Step 6: Final answer
    x = 195.90

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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.