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Finding the Fourth Proportional to 735.86, 1,102.17 and 491.24

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Solution

The fourth proportional to 735.86, 1,102.17 and 491.24 is: 735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.86 : 1,102.17 = 491.24 : x
  2. Step 2: Convert to fraction form
    735.86/1,102.17 = 491.24/x
  3. Step 3: Cross multiply
    735.86x = 1,102.17 × 491.24
  4. Step 4: Simplify right side
    735.86x = 541,429.99
  5. Step 5: Solve for x
    x = 541,429.99/735.86
  6. Step 6: Final answer
    x = 735.78

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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.