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Finding the Fourth Proportional to 340.32, 472.22 and 326.61

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Solution

The fourth proportional to 340.32, 472.22 and 326.61 is: 453.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.32 : 472.22 = 326.61 : x
  2. Step 2: Convert to fraction form
    340.32/472.22 = 326.61/x
  3. Step 3: Cross multiply
    340.32x = 472.22 × 326.61
  4. Step 4: Simplify right side
    340.32x = 154,230.14
  5. Step 5: Solve for x
    x = 154,230.14/340.32
  6. Step 6: Final answer
    x = 453.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.