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Finding the Fourth Proportional to 735.21, 1,103.28 and 410.79

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Solution

The fourth proportional to 735.21, 1,103.28 and 410.79 is: 616.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.21 : 1,103.28 = 410.79 : x
  2. Step 2: Convert to fraction form
    735.21/1,103.28 = 410.79/x
  3. Step 3: Cross multiply
    735.21x = 1,103.28 × 410.79
  4. Step 4: Simplify right side
    735.21x = 453,216.39
  5. Step 5: Solve for x
    x = 453,216.39/735.21
  6. Step 6: Final answer
    x = 616.44

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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.