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Finding the Fourth Proportional to 404.74, 605.93 and 343.04

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Solution

The fourth proportional to 404.74, 605.93 and 343.04 is: 513.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.74 : 605.93 = 343.04 : x
  2. Step 2: Convert to fraction form
    404.74/605.93 = 343.04/x
  3. Step 3: Cross multiply
    404.74x = 605.93 × 343.04
  4. Step 4: Simplify right side
    404.74x = 207,858.23
  5. Step 5: Solve for x
    x = 207,858.23/404.74
  6. Step 6: Final answer
    x = 513.57

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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.