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Finding the Fourth Proportional to 579.88, 867.64 and 356.74

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Solution

The fourth proportional to 579.88, 867.64 and 356.74 is: 533.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.88 : 867.64 = 356.74 : x
  2. Step 2: Convert to fraction form
    579.88/867.64 = 356.74/x
  3. Step 3: Cross multiply
    579.88x = 867.64 × 356.74
  4. Step 4: Simplify right side
    579.88x = 309,517.75
  5. Step 5: Solve for x
    x = 309,517.75/579.88
  6. Step 6: Final answer
    x = 533.76

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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.