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Finding the Fourth Proportional to 667.24, 999.64 and 484.18

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Solution

The fourth proportional to 667.24, 999.64 and 484.18 is: 725.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.24 : 999.64 = 484.18 : x
  2. Step 2: Convert to fraction form
    667.24/999.64 = 484.18/x
  3. Step 3: Cross multiply
    667.24x = 999.64 × 484.18
  4. Step 4: Simplify right side
    667.24x = 484,005.70
  5. Step 5: Solve for x
    x = 484,005.70/667.24
  6. Step 6: Final answer
    x = 725.38

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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.