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Finding the Fourth Proportional to 199.07, 298.57 and 141.13

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Solution

The fourth proportional to 199.07, 298.57 and 141.13 is: 211.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.07 : 298.57 = 141.13 : x
  2. Step 2: Convert to fraction form
    199.07/298.57 = 141.13/x
  3. Step 3: Cross multiply
    199.07x = 298.57 × 141.13
  4. Step 4: Simplify right side
    199.07x = 42,136.85
  5. Step 5: Solve for x
    x = 42,136.85/199.07
  6. Step 6: Final answer
    x = 211.67

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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.