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Finding the Fourth Proportional to 413.64, 571.83 and 396.45

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Solution

The fourth proportional to 413.64, 571.83 and 396.45 is: 548.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.64 : 571.83 = 396.45 : x
  2. Step 2: Convert to fraction form
    413.64/571.83 = 396.45/x
  3. Step 3: Cross multiply
    413.64x = 571.83 × 396.45
  4. Step 4: Simplify right side
    413.64x = 226,702.00
  5. Step 5: Solve for x
    x = 226,702.00/413.64
  6. Step 6: Final answer
    x = 548.07

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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.