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Finding the Fourth Proportional to 707.87, 976.92 and 413.23

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Solution

The fourth proportional to 707.87, 976.92 and 413.23 is: 570.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.87 : 976.92 = 413.23 : x
  2. Step 2: Convert to fraction form
    707.87/976.92 = 413.23/x
  3. Step 3: Cross multiply
    707.87x = 976.92 × 413.23
  4. Step 4: Simplify right side
    707.87x = 403,690.91
  5. Step 5: Solve for x
    x = 403,690.91/707.87
  6. Step 6: Final answer
    x = 570.29

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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.