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Finding the Fourth Proportional to 350.57, 525.99 and 213.73

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Solution

The fourth proportional to 350.57, 525.99 and 213.73 is: 320.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.57 : 525.99 = 213.73 : x
  2. Step 2: Convert to fraction form
    350.57/525.99 = 213.73/x
  3. Step 3: Cross multiply
    350.57x = 525.99 × 213.73
  4. Step 4: Simplify right side
    350.57x = 112,419.84
  5. Step 5: Solve for x
    x = 112,419.84/350.57
  6. Step 6: Final answer
    x = 320.68

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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.