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Finding the Fourth Proportional to 328.37, 453.16 and 195.55

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Solution

The fourth proportional to 328.37, 453.16 and 195.55 is: 269.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.37 : 453.16 = 195.55 : x
  2. Step 2: Convert to fraction form
    328.37/453.16 = 195.55/x
  3. Step 3: Cross multiply
    328.37x = 453.16 × 195.55
  4. Step 4: Simplify right side
    328.37x = 88,613.82
  5. Step 5: Solve for x
    x = 88,613.82/328.37
  6. Step 6: Final answer
    x = 269.86

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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.