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Finding the Fourth Proportional to 342.47, 512.64 and 226.13

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Solution

The fourth proportional to 342.47, 512.64 and 226.13 is: 338.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.47 : 512.64 = 226.13 : x
  2. Step 2: Convert to fraction form
    342.47/512.64 = 226.13/x
  3. Step 3: Cross multiply
    342.47x = 512.64 × 226.13
  4. Step 4: Simplify right side
    342.47x = 115,924.56
  5. Step 5: Solve for x
    x = 115,924.56/342.47
  6. Step 6: Final answer
    x = 338.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.