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Finding the Fourth Proportional to 199.18, 274.54 and 133.57

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Solution

The fourth proportional to 199.18, 274.54 and 133.57 is: 184.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.18 : 274.54 = 133.57 : x
  2. Step 2: Convert to fraction form
    199.18/274.54 = 133.57/x
  3. Step 3: Cross multiply
    199.18x = 274.54 × 133.57
  4. Step 4: Simplify right side
    199.18x = 36,670.31
  5. Step 5: Solve for x
    x = 36,670.31/199.18
  6. Step 6: Final answer
    x = 184.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.