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Finding the Fourth Proportional to 573.44, 859.75 and 408.91

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Solution

The fourth proportional to 573.44, 859.75 and 408.91 is: 613.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.44 : 859.75 = 408.91 : x
  2. Step 2: Convert to fraction form
    573.44/859.75 = 408.91/x
  3. Step 3: Cross multiply
    573.44x = 859.75 × 408.91
  4. Step 4: Simplify right side
    573.44x = 351,559.35
  5. Step 5: Solve for x
    x = 351,559.35/573.44
  6. Step 6: Final answer
    x = 613.07

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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.