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Finding the Fourth Proportional to 488.98, 674.26 and 371.17

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Solution

The fourth proportional to 488.98, 674.26 and 371.17 is: 511.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.98 : 674.26 = 371.17 : x
  2. Step 2: Convert to fraction form
    488.98/674.26 = 371.17/x
  3. Step 3: Cross multiply
    488.98x = 674.26 × 371.17
  4. Step 4: Simplify right side
    488.98x = 250,265.08
  5. Step 5: Solve for x
    x = 250,265.08/488.98
  6. Step 6: Final answer
    x = 511.81

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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.