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Finding the Fourth Proportional to 236.81, 355.47 and 168.47

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Solution

The fourth proportional to 236.81, 355.47 and 168.47 is: 252.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.81 : 355.47 = 168.47 : x
  2. Step 2: Convert to fraction form
    236.81/355.47 = 168.47/x
  3. Step 3: Cross multiply
    236.81x = 355.47 × 168.47
  4. Step 4: Simplify right side
    236.81x = 59,886.03
  5. Step 5: Solve for x
    x = 59,886.03/236.81
  6. Step 6: Final answer
    x = 252.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.