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Finding the Fourth Proportional to 328.60, 453.24 and 197.50

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Solution

The fourth proportional to 328.60, 453.24 and 197.50 is: 272.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.60 : 453.24 = 197.50 : x
  2. Step 2: Convert to fraction form
    328.60/453.24 = 197.50/x
  3. Step 3: Cross multiply
    328.60x = 453.24 × 197.50
  4. Step 4: Simplify right side
    328.60x = 89,514.90
  5. Step 5: Solve for x
    x = 89,514.90/328.60
  6. Step 6: Final answer
    x = 272.41

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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.