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Finding the Fourth Proportional to 618.44, 928.04 and 271.85

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Solution

The fourth proportional to 618.44, 928.04 and 271.85 is: 407.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.44 : 928.04 = 271.85 : x
  2. Step 2: Convert to fraction form
    618.44/928.04 = 271.85/x
  3. Step 3: Cross multiply
    618.44x = 928.04 × 271.85
  4. Step 4: Simplify right side
    618.44x = 252,281.67
  5. Step 5: Solve for x
    x = 252,281.67/618.44
  6. Step 6: Final answer
    x = 407.94

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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.