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Finding the Fourth Proportional to 349.55, 524.55 and 133.12

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Solution

The fourth proportional to 349.55, 524.55 and 133.12 is: 199.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.55 : 524.55 = 133.12 : x
  2. Step 2: Convert to fraction form
    349.55/524.55 = 133.12/x
  3. Step 3: Cross multiply
    349.55x = 524.55 × 133.12
  4. Step 4: Simplify right side
    349.55x = 69,825.47
  5. Step 5: Solve for x
    x = 69,825.47/349.55
  6. Step 6: Final answer
    x = 199.76

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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.