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Finding the Fourth Proportional to 673.97, 930.15 and 379.34

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Solution

The fourth proportional to 673.97, 930.15 and 379.34 is: 523.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.97 : 930.15 = 379.34 : x
  2. Step 2: Convert to fraction form
    673.97/930.15 = 379.34/x
  3. Step 3: Cross multiply
    673.97x = 930.15 × 379.34
  4. Step 4: Simplify right side
    673.97x = 352,843.10
  5. Step 5: Solve for x
    x = 352,843.10/673.97
  6. Step 6: Final answer
    x = 523.53

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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.