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Finding the Fourth Proportional to 433.22, 650.39 and 278.73

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Solution

The fourth proportional to 433.22, 650.39 and 278.73 is: 418.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.22 : 650.39 = 278.73 : x
  2. Step 2: Convert to fraction form
    433.22/650.39 = 278.73/x
  3. Step 3: Cross multiply
    433.22x = 650.39 × 278.73
  4. Step 4: Simplify right side
    433.22x = 181,281.81
  5. Step 5: Solve for x
    x = 181,281.81/433.22
  6. Step 6: Final answer
    x = 418.46

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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.