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Finding the Fourth Proportional to 281.48, 388.40 and 183.26

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Solution

The fourth proportional to 281.48, 388.40 and 183.26 is: 252.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.48 : 388.40 = 183.26 : x
  2. Step 2: Convert to fraction form
    281.48/388.40 = 183.26/x
  3. Step 3: Cross multiply
    281.48x = 388.40 × 183.26
  4. Step 4: Simplify right side
    281.48x = 71,178.24
  5. Step 5: Solve for x
    x = 71,178.24/281.48
  6. Step 6: Final answer
    x = 252.88

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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.