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Finding the Fourth Proportional to 374.75, 515.41 and 300.95

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Solution

The fourth proportional to 374.75, 515.41 and 300.95 is: 413.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.75 : 515.41 = 300.95 : x
  2. Step 2: Convert to fraction form
    374.75/515.41 = 300.95/x
  3. Step 3: Cross multiply
    374.75x = 515.41 × 300.95
  4. Step 4: Simplify right side
    374.75x = 155,112.64
  5. Step 5: Solve for x
    x = 155,112.64/374.75
  6. Step 6: Final answer
    x = 413.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.