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Finding the Fourth Proportional to 344.42, 475.71 and 279.26

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Solution

The fourth proportional to 344.42, 475.71 and 279.26 is: 385.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.42 : 475.71 = 279.26 : x
  2. Step 2: Convert to fraction form
    344.42/475.71 = 279.26/x
  3. Step 3: Cross multiply
    344.42x = 475.71 × 279.26
  4. Step 4: Simplify right side
    344.42x = 132,846.77
  5. Step 5: Solve for x
    x = 132,846.77/344.42
  6. Step 6: Final answer
    x = 385.71

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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.