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Finding the Fourth Proportional to 281.73, 388.59 and 165.29

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Solution

The fourth proportional to 281.73, 388.59 and 165.29 is: 227.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.73 : 388.59 = 165.29 : x
  2. Step 2: Convert to fraction form
    281.73/388.59 = 165.29/x
  3. Step 3: Cross multiply
    281.73x = 388.59 × 165.29
  4. Step 4: Simplify right side
    281.73x = 64,228.10
  5. Step 5: Solve for x
    x = 64,228.10/281.73
  6. Step 6: Final answer
    x = 227.98

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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.