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Finding the Fourth Proportional to 342.13, 472.09 and 194.76

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Solution

The fourth proportional to 342.13, 472.09 and 194.76 is: 268.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.13 : 472.09 = 194.76 : x
  2. Step 2: Convert to fraction form
    342.13/472.09 = 194.76/x
  3. Step 3: Cross multiply
    342.13x = 472.09 × 194.76
  4. Step 4: Simplify right side
    342.13x = 91,940.91
  5. Step 5: Solve for x
    x = 91,940.91/342.13
  6. Step 6: Final answer
    x = 268.73

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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.