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Finding the Fourth Proportional to 674.28, 930.15 and 441

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Solution

The fourth proportional to 674.28, 930.15 and 441 is: 608.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.28 : 930.15 = 441 : x
  2. Step 2: Convert to fraction form
    674.28/930.15 = 441/x
  3. Step 3: Cross multiply
    674.28x = 930.15 × 441
  4. Step 4: Simplify right side
    674.28x = 410,196.15
  5. Step 5: Solve for x
    x = 410,196.15/674.28
  6. Step 6: Final answer
    x = 608.35

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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.