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Finding the Fourth Proportional to 569.35, 852.19 and 321.89

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Solution

The fourth proportional to 569.35, 852.19 and 321.89 is: 481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.35 : 852.19 = 321.89 : x
  2. Step 2: Convert to fraction form
    569.35/852.19 = 321.89/x
  3. Step 3: Cross multiply
    569.35x = 852.19 × 321.89
  4. Step 4: Simplify right side
    569.35x = 274,311.44
  5. Step 5: Solve for x
    x = 274,311.44/569.35
  6. Step 6: Final answer
    x = 481.80

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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.