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Finding the Fourth Proportional to 344.19, 474.87 and 194.79

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Solution

The fourth proportional to 344.19, 474.87 and 194.79 is: 268.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.19 : 474.87 = 194.79 : x
  2. Step 2: Convert to fraction form
    344.19/474.87 = 194.79/x
  3. Step 3: Cross multiply
    344.19x = 474.87 × 194.79
  4. Step 4: Simplify right side
    344.19x = 92,499.93
  5. Step 5: Solve for x
    x = 92,499.93/344.19
  6. Step 6: Final answer
    x = 268.75

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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.