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Finding the Fourth Proportional to 297.59, 410.45 and 204.21

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Solution

The fourth proportional to 297.59, 410.45 and 204.21 is: 281.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.59 : 410.45 = 204.21 : x
  2. Step 2: Convert to fraction form
    297.59/410.45 = 204.21/x
  3. Step 3: Cross multiply
    297.59x = 410.45 × 204.21
  4. Step 4: Simplify right side
    297.59x = 83,816.97
  5. Step 5: Solve for x
    x = 83,816.97/297.59
  6. Step 6: Final answer
    x = 281.66

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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.