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Finding the Fourth Proportional to 564.30, 847.67 and 477.80

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Solution

The fourth proportional to 564.30, 847.67 and 477.80 is: 717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.30 : 847.67 = 477.80 : x
  2. Step 2: Convert to fraction form
    564.30/847.67 = 477.80/x
  3. Step 3: Cross multiply
    564.30x = 847.67 × 477.80
  4. Step 4: Simplify right side
    564.30x = 405,016.46
  5. Step 5: Solve for x
    x = 405,016.46/564.30
  6. Step 6: Final answer
    x = 717.73

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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.