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Finding the Fourth Proportional to 579.42, 863.76 and 570.54

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Solution

The fourth proportional to 579.42, 863.76 and 570.54 is: 850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.42 : 863.76 = 570.54 : x
  2. Step 2: Convert to fraction form
    579.42/863.76 = 570.54/x
  3. Step 3: Cross multiply
    579.42x = 863.76 × 570.54
  4. Step 4: Simplify right side
    579.42x = 492,809.63
  5. Step 5: Solve for x
    x = 492,809.63/579.42
  6. Step 6: Final answer
    x = 850.52

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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.