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Finding the Fourth Proportional to 218.52, 329.58 and 194.76

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Solution

The fourth proportional to 218.52, 329.58 and 194.76 is: 293.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.52 : 329.58 = 194.76 : x
  2. Step 2: Convert to fraction form
    218.52/329.58 = 194.76/x
  3. Step 3: Cross multiply
    218.52x = 329.58 × 194.76
  4. Step 4: Simplify right side
    218.52x = 64,189.00
  5. Step 5: Solve for x
    x = 64,189.00/218.52
  6. Step 6: Final answer
    x = 293.74

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.