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Finding the Fourth Proportional to 413.16, 570.09 and 238.47

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Solution

The fourth proportional to 413.16, 570.09 and 238.47 is: 329.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.16 : 570.09 = 238.47 : x
  2. Step 2: Convert to fraction form
    413.16/570.09 = 238.47/x
  3. Step 3: Cross multiply
    413.16x = 570.09 × 238.47
  4. Step 4: Simplify right side
    413.16x = 135,949.36
  5. Step 5: Solve for x
    x = 135,949.36/413.16
  6. Step 6: Final answer
    x = 329.05

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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.