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Finding the Fourth Proportional to 236.06, 325.79 and 142.85

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Solution

The fourth proportional to 236.06, 325.79 and 142.85 is: 197.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.06 : 325.79 = 142.85 : x
  2. Step 2: Convert to fraction form
    236.06/325.79 = 142.85/x
  3. Step 3: Cross multiply
    236.06x = 325.79 × 142.85
  4. Step 4: Simplify right side
    236.06x = 46,536.76
  5. Step 5: Solve for x
    x = 46,536.76/236.06
  6. Step 6: Final answer
    x = 197.14

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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.