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Finding the Fourth Proportional to 573.09, 858.93 and 419.66

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Solution

The fourth proportional to 573.09, 858.93 and 419.66 is: 628.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.09 : 858.93 = 419.66 : x
  2. Step 2: Convert to fraction form
    573.09/858.93 = 419.66/x
  3. Step 3: Cross multiply
    573.09x = 858.93 × 419.66
  4. Step 4: Simplify right side
    573.09x = 360,458.56
  5. Step 5: Solve for x
    x = 360,458.56/573.09
  6. Step 6: Final answer
    x = 628.97

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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.