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Finding the Fourth Proportional to 561.51, 773.91 and 413.82

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Solution

The fourth proportional to 561.51, 773.91 and 413.82 is: 570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.51 : 773.91 = 413.82 : x
  2. Step 2: Convert to fraction form
    561.51/773.91 = 413.82/x
  3. Step 3: Cross multiply
    561.51x = 773.91 × 413.82
  4. Step 4: Simplify right side
    561.51x = 320,259.44
  5. Step 5: Solve for x
    x = 320,259.44/561.51
  6. Step 6: Final answer
    x = 570.35

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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.