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Finding the Fourth Proportional to 529.19, 793.83 and 321.12

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Solution

The fourth proportional to 529.19, 793.83 and 321.12 is: 481.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.19 : 793.83 = 321.12 : x
  2. Step 2: Convert to fraction form
    529.19/793.83 = 321.12/x
  3. Step 3: Cross multiply
    529.19x = 793.83 × 321.12
  4. Step 4: Simplify right side
    529.19x = 254,914.69
  5. Step 5: Solve for x
    x = 254,914.69/529.19
  6. Step 6: Final answer
    x = 481.71

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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.