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Finding the Fourth Proportional to 343.69, 514.39 and 274.89

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Solution

The fourth proportional to 343.69, 514.39 and 274.89 is: 411.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.69 : 514.39 = 274.89 : x
  2. Step 2: Convert to fraction form
    343.69/514.39 = 274.89/x
  3. Step 3: Cross multiply
    343.69x = 514.39 × 274.89
  4. Step 4: Simplify right side
    343.69x = 141,400.67
  5. Step 5: Solve for x
    x = 141,400.67/343.69
  6. Step 6: Final answer
    x = 411.42

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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.