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Finding the Fourth Proportional to 971.67, 1,339.74 and 793.97

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Solution

The fourth proportional to 971.67, 1,339.74 and 793.97 is: 1,094.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.67 : 1,339.74 = 793.97 : x
  2. Step 2: Convert to fraction form
    971.67/1,339.74 = 793.97/x
  3. Step 3: Cross multiply
    971.67x = 1,339.74 × 793.97
  4. Step 4: Simplify right side
    971.67x = 1,063,716.72
  5. Step 5: Solve for x
    x = 1,063,716.72/971.67
  6. Step 6: Final answer
    x = 1,094.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.