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Finding the Fourth Proportional to 413.49, 569.11 and 330.33

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Solution

The fourth proportional to 413.49, 569.11 and 330.33 is: 454.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.49 : 569.11 = 330.33 : x
  2. Step 2: Convert to fraction form
    413.49/569.11 = 330.33/x
  3. Step 3: Cross multiply
    413.49x = 569.11 × 330.33
  4. Step 4: Simplify right side
    413.49x = 187,994.11
  5. Step 5: Solve for x
    x = 187,994.11/413.49
  6. Step 6: Final answer
    x = 454.65

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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.