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Finding the Fourth Proportional to 397.87, 548.83 and 232.07

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Solution

The fourth proportional to 397.87, 548.83 and 232.07 is: 320.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.87 : 548.83 = 232.07 : x
  2. Step 2: Convert to fraction form
    397.87/548.83 = 232.07/x
  3. Step 3: Cross multiply
    397.87x = 548.83 × 232.07
  4. Step 4: Simplify right side
    397.87x = 127,363.65
  5. Step 5: Solve for x
    x = 127,363.65/397.87
  6. Step 6: Final answer
    x = 320.12

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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.