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Finding the Fourth Proportional to 218.86, 327.76 and 126.03

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Solution

The fourth proportional to 218.86, 327.76 and 126.03 is: 188.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.86 : 327.76 = 126.03 : x
  2. Step 2: Convert to fraction form
    218.86/327.76 = 126.03/x
  3. Step 3: Cross multiply
    218.86x = 327.76 × 126.03
  4. Step 4: Simplify right side
    218.86x = 41,307.59
  5. Step 5: Solve for x
    x = 41,307.59/218.86
  6. Step 6: Final answer
    x = 188.74

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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.