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Finding the Fourth Proportional to 361.92, 543.10 and 199.70

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Solution

The fourth proportional to 361.92, 543.10 and 199.70 is: 299.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.92 : 543.10 = 199.70 : x
  2. Step 2: Convert to fraction form
    361.92/543.10 = 199.70/x
  3. Step 3: Cross multiply
    361.92x = 543.10 × 199.70
  4. Step 4: Simplify right side
    361.92x = 108,457.07
  5. Step 5: Solve for x
    x = 108,457.07/361.92
  6. Step 6: Final answer
    x = 299.67

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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.