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Finding the Fourth Proportional to 679.22, 937.32 and 368.72

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Solution

The fourth proportional to 679.22, 937.32 and 368.72 is: 508.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.22 : 937.32 = 368.72 : x
  2. Step 2: Convert to fraction form
    679.22/937.32 = 368.72/x
  3. Step 3: Cross multiply
    679.22x = 937.32 × 368.72
  4. Step 4: Simplify right side
    679.22x = 345,608.15
  5. Step 5: Solve for x
    x = 345,608.15/679.22
  6. Step 6: Final answer
    x = 508.83

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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.