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Finding the Fourth Proportional to 729.92, 1,093.60 and 535.36

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Solution

The fourth proportional to 729.92, 1,093.60 and 535.36 is: 802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    729.92 : 1,093.60 = 535.36 : x
  2. Step 2: Convert to fraction form
    729.92/1,093.60 = 535.36/x
  3. Step 3: Cross multiply
    729.92x = 1,093.60 × 535.36
  4. Step 4: Simplify right side
    729.92x = 585,469.70
  5. Step 5: Solve for x
    x = 585,469.70/729.92
  6. Step 6: Final answer
    x = 802.10

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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.