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Finding the Fourth Proportional to 204.38, 305.34 and 171.59

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Solution

The fourth proportional to 204.38, 305.34 and 171.59 is: 256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.38 : 305.34 = 171.59 : x
  2. Step 2: Convert to fraction form
    204.38/305.34 = 171.59/x
  3. Step 3: Cross multiply
    204.38x = 305.34 × 171.59
  4. Step 4: Simplify right side
    204.38x = 52,392.43
  5. Step 5: Solve for x
    x = 52,392.43/204.38
  6. Step 6: Final answer
    x = 256.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.