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Finding the Fourth Proportional to 564.80, 845.22 and 488.66

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Solution

The fourth proportional to 564.80, 845.22 and 488.66 is: 731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.80 : 845.22 = 488.66 : x
  2. Step 2: Convert to fraction form
    564.80/845.22 = 488.66/x
  3. Step 3: Cross multiply
    564.80x = 845.22 × 488.66
  4. Step 4: Simplify right side
    564.80x = 413,025.21
  5. Step 5: Solve for x
    x = 413,025.21/564.80
  6. Step 6: Final answer
    x = 731.28

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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.