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Finding the Fourth Proportional to 832.36, 1,247.10 and 745.96

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Solution

The fourth proportional to 832.36, 1,247.10 and 745.96 is: 1,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.36 : 1,247.10 = 745.96 : x
  2. Step 2: Convert to fraction form
    832.36/1,247.10 = 745.96/x
  3. Step 3: Cross multiply
    832.36x = 1,247.10 × 745.96
  4. Step 4: Simplify right side
    832.36x = 930,286.72
  5. Step 5: Solve for x
    x = 930,286.72/832.36
  6. Step 6: Final answer
    x = 1,117.65

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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.