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Finding the Fourth Proportional to 674.88, 930.03 and 488.04

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Solution

The fourth proportional to 674.88, 930.03 and 488.04 is: 672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.88 : 930.03 = 488.04 : x
  2. Step 2: Convert to fraction form
    674.88/930.03 = 488.04/x
  3. Step 3: Cross multiply
    674.88x = 930.03 × 488.04
  4. Step 4: Simplify right side
    674.88x = 453,891.84
  5. Step 5: Solve for x
    x = 453,891.84/674.88
  6. Step 6: Final answer
    x = 672.55

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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.