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Finding the Fourth Proportional to 350.43, 525.31 and 133.86

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Solution

The fourth proportional to 350.43, 525.31 and 133.86 is: 200.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.43 : 525.31 = 133.86 : x
  2. Step 2: Convert to fraction form
    350.43/525.31 = 133.86/x
  3. Step 3: Cross multiply
    350.43x = 525.31 × 133.86
  4. Step 4: Simplify right side
    350.43x = 70,318.00
  5. Step 5: Solve for x
    x = 70,318.00/350.43
  6. Step 6: Final answer
    x = 200.66

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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.