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Finding the Fourth Proportional to 679.35, 937.49 and 368.85

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Solution

The fourth proportional to 679.35, 937.49 and 368.85 is: 509.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.35 : 937.49 = 368.85 : x
  2. Step 2: Convert to fraction form
    679.35/937.49 = 368.85/x
  3. Step 3: Cross multiply
    679.35x = 937.49 × 368.85
  4. Step 4: Simplify right side
    679.35x = 345,793.19
  5. Step 5: Solve for x
    x = 345,793.19/679.35
  6. Step 6: Final answer
    x = 509.01

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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.