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Finding the Fourth Proportional to 328.94, 453.94 and 197.92

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Solution

The fourth proportional to 328.94, 453.94 and 197.92 is: 273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.94 : 453.94 = 197.92 : x
  2. Step 2: Convert to fraction form
    328.94/453.94 = 197.92/x
  3. Step 3: Cross multiply
    328.94x = 453.94 × 197.92
  4. Step 4: Simplify right side
    328.94x = 89,843.80
  5. Step 5: Solve for x
    x = 89,843.80/328.94
  6. Step 6: Final answer
    x = 273.13

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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.