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Finding the Fourth Proportional to 328.49, 453.40 and 204.25

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Solution

The fourth proportional to 328.49, 453.40 and 204.25 is: 281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.49 : 453.40 = 204.25 : x
  2. Step 2: Convert to fraction form
    328.49/453.40 = 204.25/x
  3. Step 3: Cross multiply
    328.49x = 453.40 × 204.25
  4. Step 4: Simplify right side
    328.49x = 92,604.88
  5. Step 5: Solve for x
    x = 92,604.88/328.49
  6. Step 6: Final answer
    x = 281.91

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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.