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Finding the Fourth Proportional to 413.13, 570 and 238.44

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Solution

The fourth proportional to 413.13, 570 and 238.44 is: 328.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.13 : 570 = 238.44 : x
  2. Step 2: Convert to fraction form
    413.13/570 = 238.44/x
  3. Step 3: Cross multiply
    413.13x = 570 × 238.44
  4. Step 4: Simplify right side
    413.13x = 135,910.80
  5. Step 5: Solve for x
    x = 135,910.80/413.13
  6. Step 6: Final answer
    x = 328.98

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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.