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Finding the Fourth Proportional to 218.58, 301.39 and 168.67

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Solution

The fourth proportional to 218.58, 301.39 and 168.67 is: 232.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.58 : 301.39 = 168.67 : x
  2. Step 2: Convert to fraction form
    218.58/301.39 = 168.67/x
  3. Step 3: Cross multiply
    218.58x = 301.39 × 168.67
  4. Step 4: Simplify right side
    218.58x = 50,836.20
  5. Step 5: Solve for x
    x = 50,836.20/218.58
  6. Step 6: Final answer
    x = 232.58

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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.