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Finding the Fourth Proportional to 618.30, 927.47 and 252.83

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Solution

The fourth proportional to 618.30, 927.47 and 252.83 is: 379.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.30 : 927.47 = 252.83 : x
  2. Step 2: Convert to fraction form
    618.30/927.47 = 252.83/x
  3. Step 3: Cross multiply
    618.30x = 927.47 × 252.83
  4. Step 4: Simplify right side
    618.30x = 234,492.24
  5. Step 5: Solve for x
    x = 234,492.24/618.30
  6. Step 6: Final answer
    x = 379.25

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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.