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Finding the Fourth Proportional to 707.97, 976.67 and 413.07

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Solution

The fourth proportional to 707.97, 976.67 and 413.07 is: 569.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.97 : 976.67 = 413.07 : x
  2. Step 2: Convert to fraction form
    707.97/976.67 = 413.07/x
  3. Step 3: Cross multiply
    707.97x = 976.67 × 413.07
  4. Step 4: Simplify right side
    707.97x = 403,431.01
  5. Step 5: Solve for x
    x = 403,431.01/707.97
  6. Step 6: Final answer
    x = 569.84

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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.