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Finding the Fourth Proportional to 735.36, 1,019.87 and 673.86

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Solution

The fourth proportional to 735.36, 1,019.87 and 673.86 is: 934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.36 : 1,019.87 = 673.86 : x
  2. Step 2: Convert to fraction form
    735.36/1,019.87 = 673.86/x
  3. Step 3: Cross multiply
    735.36x = 1,019.87 × 673.86
  4. Step 4: Simplify right side
    735.36x = 687,246.23
  5. Step 5: Solve for x
    x = 687,246.23/735.36
  6. Step 6: Final answer
    x = 934.57

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.