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Finding the Fourth Proportional to 328.41, 453.23 and 197.49

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Solution

The fourth proportional to 328.41, 453.23 and 197.49 is: 272.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.41 : 453.23 = 197.49 : x
  2. Step 2: Convert to fraction form
    328.41/453.23 = 197.49/x
  3. Step 3: Cross multiply
    328.41x = 453.23 × 197.49
  4. Step 4: Simplify right side
    328.41x = 89,507.41
  5. Step 5: Solve for x
    x = 89,507.41/328.41
  6. Step 6: Final answer
    x = 272.55

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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.