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Finding the Fourth Proportional to 343.13, 514.96 and 198.95

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Solution

The fourth proportional to 343.13, 514.96 and 198.95 is: 298.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.13 : 514.96 = 198.95 : x
  2. Step 2: Convert to fraction form
    343.13/514.96 = 198.95/x
  3. Step 3: Cross multiply
    343.13x = 514.96 × 198.95
  4. Step 4: Simplify right side
    343.13x = 102,448.22
  5. Step 5: Solve for x
    x = 102,448.22/343.13
  6. Step 6: Final answer
    x = 298.57

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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.