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Finding the Fourth Proportional to 735.26, 1,104.10 and 686.66

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Solution

The fourth proportional to 735.26, 1,104.10 and 686.66 is: 1,031.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.26 : 1,104.10 = 686.66 : x
  2. Step 2: Convert to fraction form
    735.26/1,104.10 = 686.66/x
  3. Step 3: Cross multiply
    735.26x = 1,104.10 × 686.66
  4. Step 4: Simplify right side
    735.26x = 758,141.31
  5. Step 5: Solve for x
    x = 758,141.31/735.26
  6. Step 6: Final answer
    x = 1,031.12

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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.