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Finding the Fourth Proportional to 437.20, 654.91 and 254.03

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Solution

The fourth proportional to 437.20, 654.91 and 254.03 is: 380.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.20 : 654.91 = 254.03 : x
  2. Step 2: Convert to fraction form
    437.20/654.91 = 254.03/x
  3. Step 3: Cross multiply
    437.20x = 654.91 × 254.03
  4. Step 4: Simplify right side
    437.20x = 166,362.88
  5. Step 5: Solve for x
    x = 166,362.88/437.20
  6. Step 6: Final answer
    x = 380.52

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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.