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Finding the Fourth Proportional to 674.27, 930.48 and 379.53

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Solution

The fourth proportional to 674.27, 930.48 and 379.53 is: 523.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.27 : 930.48 = 379.53 : x
  2. Step 2: Convert to fraction form
    674.27/930.48 = 379.53/x
  3. Step 3: Cross multiply
    674.27x = 930.48 × 379.53
  4. Step 4: Simplify right side
    674.27x = 353,145.07
  5. Step 5: Solve for x
    x = 353,145.07/674.27
  6. Step 6: Final answer
    x = 523.75

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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.