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Finding the Fourth Proportional to 564.75, 847.13 and 320.94

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Solution

The fourth proportional to 564.75, 847.13 and 320.94 is: 481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.75 : 847.13 = 320.94 : x
  2. Step 2: Convert to fraction form
    564.75/847.13 = 320.94/x
  3. Step 3: Cross multiply
    564.75x = 847.13 × 320.94
  4. Step 4: Simplify right side
    564.75x = 271,876.30
  5. Step 5: Solve for x
    x = 271,876.30/564.75
  6. Step 6: Final answer
    x = 481.41

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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.