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Finding the Fourth Proportional to 481.40, 722.27 and 276.14

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Solution

The fourth proportional to 481.40, 722.27 and 276.14 is: 414.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.40 : 722.27 = 276.14 : x
  2. Step 2: Convert to fraction form
    481.40/722.27 = 276.14/x
  3. Step 3: Cross multiply
    481.40x = 722.27 × 276.14
  4. Step 4: Simplify right side
    481.40x = 199,447.64
  5. Step 5: Solve for x
    x = 199,447.64/481.40
  6. Step 6: Final answer
    x = 414.31

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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.