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Finding the Fourth Proportional to 563.96, 845.97 and 318.73

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Solution

The fourth proportional to 563.96, 845.97 and 318.73 is: 478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.96 : 845.97 = 318.73 : x
  2. Step 2: Convert to fraction form
    563.96/845.97 = 318.73/x
  3. Step 3: Cross multiply
    563.96x = 845.97 × 318.73
  4. Step 4: Simplify right side
    563.96x = 269,630.19
  5. Step 5: Solve for x
    x = 269,630.19/563.96
  6. Step 6: Final answer
    x = 478.11

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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.