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Finding the Fourth Proportional to 569.85, 854.84 and 218.59

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Solution

The fourth proportional to 569.85, 854.84 and 218.59 is: 327.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.85 : 854.84 = 218.59 : x
  2. Step 2: Convert to fraction form
    569.85/854.84 = 218.59/x
  3. Step 3: Cross multiply
    569.85x = 854.84 × 218.59
  4. Step 4: Simplify right side
    569.85x = 186,857.88
  5. Step 5: Solve for x
    x = 186,857.88/569.85
  6. Step 6: Final answer
    x = 327.91

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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.