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Finding the Fourth Proportional to 735.57, 1,099.62 and 519.30

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Solution

The fourth proportional to 735.57, 1,099.62 and 519.30 is: 776.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.57 : 1,099.62 = 519.30 : x
  2. Step 2: Convert to fraction form
    735.57/1,099.62 = 519.30/x
  3. Step 3: Cross multiply
    735.57x = 1,099.62 × 519.30
  4. Step 4: Simplify right side
    735.57x = 571,032.67
  5. Step 5: Solve for x
    x = 571,032.67/735.57
  6. Step 6: Final answer
    x = 776.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.