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Finding the Fourth Proportional to 618.69, 927.45 and 310.08

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Solution

The fourth proportional to 618.69, 927.45 and 310.08 is: 464.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.69 : 927.45 = 310.08 : x
  2. Step 2: Convert to fraction form
    618.69/927.45 = 310.08/x
  3. Step 3: Cross multiply
    618.69x = 927.45 × 310.08
  4. Step 4: Simplify right side
    618.69x = 287,583.70
  5. Step 5: Solve for x
    x = 287,583.70/618.69
  6. Step 6: Final answer
    x = 464.83

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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.