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Finding the Fourth Proportional to 579.04, 863.67 and 561.75

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Solution

The fourth proportional to 579.04, 863.67 and 561.75 is: 837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.04 : 863.67 = 561.75 : x
  2. Step 2: Convert to fraction form
    579.04/863.67 = 561.75/x
  3. Step 3: Cross multiply
    579.04x = 863.67 × 561.75
  4. Step 4: Simplify right side
    579.04x = 485,166.62
  5. Step 5: Solve for x
    x = 485,166.62/579.04
  6. Step 6: Final answer
    x = 837.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.