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Finding the Fourth Proportional to 413.28, 573.66 and 397.44

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Solution

The fourth proportional to 413.28, 573.66 and 397.44 is: 551.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.28 : 573.66 = 397.44 : x
  2. Step 2: Convert to fraction form
    413.28/573.66 = 397.44/x
  3. Step 3: Cross multiply
    413.28x = 573.66 × 397.44
  4. Step 4: Simplify right side
    413.28x = 227,995.43
  5. Step 5: Solve for x
    x = 227,995.43/413.28
  6. Step 6: Final answer
    x = 551.67

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.