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Finding the Fourth Proportional to 199.16, 299.19 and 141.51

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Solution

The fourth proportional to 199.16, 299.19 and 141.51 is: 212.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.16 : 299.19 = 141.51 : x
  2. Step 2: Convert to fraction form
    199.16/299.19 = 141.51/x
  3. Step 3: Cross multiply
    199.16x = 299.19 × 141.51
  4. Step 4: Simplify right side
    199.16x = 42,340.03
  5. Step 5: Solve for x
    x = 42,340.03/199.16
  6. Step 6: Final answer
    x = 212.59

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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.