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Finding the Fourth Proportional to 579.22, 867.48 and 286.18

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Solution

The fourth proportional to 579.22, 867.48 and 286.18 is: 428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.22 : 867.48 = 286.18 : x
  2. Step 2: Convert to fraction form
    579.22/867.48 = 286.18/x
  3. Step 3: Cross multiply
    579.22x = 867.48 × 286.18
  4. Step 4: Simplify right side
    579.22x = 248,255.43
  5. Step 5: Solve for x
    x = 248,255.43/579.22
  6. Step 6: Final answer
    x = 428.60

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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.