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Finding the Fourth Proportional to 413.36, 570.21 and 326.42

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Solution

The fourth proportional to 413.36, 570.21 and 326.42 is: 450.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.36 : 570.21 = 326.42 : x
  2. Step 2: Convert to fraction form
    413.36/570.21 = 326.42/x
  3. Step 3: Cross multiply
    413.36x = 570.21 × 326.42
  4. Step 4: Simplify right side
    413.36x = 186,127.95
  5. Step 5: Solve for x
    x = 186,127.95/413.36
  6. Step 6: Final answer
    x = 450.28

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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.