Home / 281.14-421.23-271.18

Finding the Fourth Proportional to 281.14, 421.23 and 271.18

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Solution

The fourth proportional to 281.14, 421.23 and 271.18 is: 406.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.14 : 421.23 = 271.18 : x
  2. Step 2: Convert to fraction form
    281.14/421.23 = 271.18/x
  3. Step 3: Cross multiply
    281.14x = 421.23 × 271.18
  4. Step 4: Simplify right side
    281.14x = 114,229.15
  5. Step 5: Solve for x
    x = 114,229.15/281.14
  6. Step 6: Final answer
    x = 406.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.