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Finding the Fourth Proportional to 282.06, 388.83 and 223.74

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Solution

The fourth proportional to 282.06, 388.83 and 223.74 is: 308.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.06 : 388.83 = 223.74 : x
  2. Step 2: Convert to fraction form
    282.06/388.83 = 223.74/x
  3. Step 3: Cross multiply
    282.06x = 388.83 × 223.74
  4. Step 4: Simplify right side
    282.06x = 86,996.82
  5. Step 5: Solve for x
    x = 86,996.82/282.06
  6. Step 6: Final answer
    x = 308.43

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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.