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Finding the Fourth Proportional to 504.26, 754.82 and 321.80

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Solution

The fourth proportional to 504.26, 754.82 and 321.80 is: 481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.26 : 754.82 = 321.80 : x
  2. Step 2: Convert to fraction form
    504.26/754.82 = 321.80/x
  3. Step 3: Cross multiply
    504.26x = 754.82 × 321.80
  4. Step 4: Simplify right side
    504.26x = 242,901.08
  5. Step 5: Solve for x
    x = 242,901.08/504.26
  6. Step 6: Final answer
    x = 481.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.