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Finding the Fourth Proportional to 389.46, 537.38 and 234.22

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Solution

The fourth proportional to 389.46, 537.38 and 234.22 is: 323.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.46 : 537.38 = 234.22 : x
  2. Step 2: Convert to fraction form
    389.46/537.38 = 234.22/x
  3. Step 3: Cross multiply
    389.46x = 537.38 × 234.22
  4. Step 4: Simplify right side
    389.46x = 125,865.14
  5. Step 5: Solve for x
    x = 125,865.14/389.46
  6. Step 6: Final answer
    x = 323.18

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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.