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Finding the Fourth Proportional to 579.83, 870.30 and 394.16

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Solution

The fourth proportional to 579.83, 870.30 and 394.16 is: 591.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.83 : 870.30 = 394.16 : x
  2. Step 2: Convert to fraction form
    579.83/870.30 = 394.16/x
  3. Step 3: Cross multiply
    579.83x = 870.30 × 394.16
  4. Step 4: Simplify right side
    579.83x = 343,033.10
  5. Step 5: Solve for x
    x = 343,033.10/579.83
  6. Step 6: Final answer
    x = 591.61

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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.