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Finding the Fourth Proportional to 218.19, 301.19 and 168.87

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Solution

The fourth proportional to 218.19, 301.19 and 168.87 is: 233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.19 : 301.19 = 168.87 : x
  2. Step 2: Convert to fraction form
    218.19/301.19 = 168.87/x
  3. Step 3: Cross multiply
    218.19x = 301.19 × 168.87
  4. Step 4: Simplify right side
    218.19x = 50,861.11
  5. Step 5: Solve for x
    x = 50,861.11/218.19
  6. Step 6: Final answer
    x = 233.10

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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.