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Finding the Fourth Proportional to 283.36, 390.50 and 204.54

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Solution

The fourth proportional to 283.36, 390.50 and 204.54 is: 281.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.36 : 390.50 = 204.54 : x
  2. Step 2: Convert to fraction form
    283.36/390.50 = 204.54/x
  3. Step 3: Cross multiply
    283.36x = 390.50 × 204.54
  4. Step 4: Simplify right side
    283.36x = 79,872.30
  5. Step 5: Solve for x
    x = 79,872.30/283.36
  6. Step 6: Final answer
    x = 281.88

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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.