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Finding the Fourth Proportional to 349.98, 525.17 and 133.55

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Solution

The fourth proportional to 349.98, 525.17 and 133.55 is: 200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.98 : 525.17 = 133.55 : x
  2. Step 2: Convert to fraction form
    349.98/525.17 = 133.55/x
  3. Step 3: Cross multiply
    349.98x = 525.17 × 133.55
  4. Step 4: Simplify right side
    349.98x = 70,136.45
  5. Step 5: Solve for x
    x = 70,136.45/349.98
  6. Step 6: Final answer
    x = 200.40

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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.