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Finding the Fourth Proportional to 553.92, 768.48 and 531.36

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Solution

The fourth proportional to 553.92, 768.48 and 531.36 is: 737.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.92 : 768.48 = 531.36 : x
  2. Step 2: Convert to fraction form
    553.92/768.48 = 531.36/x
  3. Step 3: Cross multiply
    553.92x = 768.48 × 531.36
  4. Step 4: Simplify right side
    553.92x = 408,339.53
  5. Step 5: Solve for x
    x = 408,339.53/553.92
  6. Step 6: Final answer
    x = 737.18

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.