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Finding the Fourth Proportional to 343.54, 474.10 and 203.74

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Solution

The fourth proportional to 343.54, 474.10 and 203.74 is: 281.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.54 : 474.10 = 203.74 : x
  2. Step 2: Convert to fraction form
    343.54/474.10 = 203.74/x
  3. Step 3: Cross multiply
    343.54x = 474.10 × 203.74
  4. Step 4: Simplify right side
    343.54x = 96,591.44
  5. Step 5: Solve for x
    x = 96,591.44/343.54
  6. Step 6: Final answer
    x = 281.17

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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.