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Finding the Fourth Proportional to 350.35, 525.34 and 133.81

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Solution

The fourth proportional to 350.35, 525.34 and 133.81 is: 200.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.35 : 525.34 = 133.81 : x
  2. Step 2: Convert to fraction form
    350.35/525.34 = 133.81/x
  3. Step 3: Cross multiply
    350.35x = 525.34 × 133.81
  4. Step 4: Simplify right side
    350.35x = 70,295.75
  5. Step 5: Solve for x
    x = 70,295.75/350.35
  6. Step 6: Final answer
    x = 200.64

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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.