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Finding the Fourth Proportional to 236.02, 325.61 and 142.76

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Solution

The fourth proportional to 236.02, 325.61 and 142.76 is: 196.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.02 : 325.61 = 142.76 : x
  2. Step 2: Convert to fraction form
    236.02/325.61 = 142.76/x
  3. Step 3: Cross multiply
    236.02x = 325.61 × 142.76
  4. Step 4: Simplify right side
    236.02x = 46,484.08
  5. Step 5: Solve for x
    x = 46,484.08/236.02
  6. Step 6: Final answer
    x = 196.95

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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.