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Finding the Fourth Proportional to 475.42, 656.09 and 268.42

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Solution

The fourth proportional to 475.42, 656.09 and 268.42 is: 370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.42 : 656.09 = 268.42 : x
  2. Step 2: Convert to fraction form
    475.42/656.09 = 268.42/x
  3. Step 3: Cross multiply
    475.42x = 656.09 × 268.42
  4. Step 4: Simplify right side
    475.42x = 176,107.68
  5. Step 5: Solve for x
    x = 176,107.68/475.42
  6. Step 6: Final answer
    x = 370.43

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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.