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Finding the Fourth Proportional to 573.23, 859.91 and 221.96

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Solution

The fourth proportional to 573.23, 859.91 and 221.96 is: 332.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.23 : 859.91 = 221.96 : x
  2. Step 2: Convert to fraction form
    573.23/859.91 = 221.96/x
  3. Step 3: Cross multiply
    573.23x = 859.91 × 221.96
  4. Step 4: Simplify right side
    573.23x = 190,866.66
  5. Step 5: Solve for x
    x = 190,866.66/573.23
  6. Step 6: Final answer
    x = 332.97

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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.