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Finding the Fourth Proportional to 673.99, 930.13 and 379.29

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Solution

The fourth proportional to 673.99, 930.13 and 379.29 is: 523.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.99 : 930.13 = 379.29 : x
  2. Step 2: Convert to fraction form
    673.99/930.13 = 379.29/x
  3. Step 3: Cross multiply
    673.99x = 930.13 × 379.29
  4. Step 4: Simplify right side
    673.99x = 352,785.31
  5. Step 5: Solve for x
    x = 352,785.31/673.99
  6. Step 6: Final answer
    x = 523.43

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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.