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Finding the Fourth Proportional to 365.05, 547.57 and 133.87

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Solution

The fourth proportional to 365.05, 547.57 and 133.87 is: 200.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.05 : 547.57 = 133.87 : x
  2. Step 2: Convert to fraction form
    365.05/547.57 = 133.87/x
  3. Step 3: Cross multiply
    365.05x = 547.57 × 133.87
  4. Step 4: Simplify right side
    365.05x = 73,302.53
  5. Step 5: Solve for x
    x = 73,302.53/365.05
  6. Step 6: Final answer
    x = 200.80

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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.