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Finding the Fourth Proportional to 364.21, 546.27 and 133.09

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Solution

The fourth proportional to 364.21, 546.27 and 133.09 is: 199.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.21 : 546.27 = 133.09 : x
  2. Step 2: Convert to fraction form
    364.21/546.27 = 133.09/x
  3. Step 3: Cross multiply
    364.21x = 546.27 × 133.09
  4. Step 4: Simplify right side
    364.21x = 72,703.07
  5. Step 5: Solve for x
    x = 72,703.07/364.21
  6. Step 6: Final answer
    x = 199.62

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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.