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Finding the Fourth Proportional to 572.43, 793.27 and 561.49

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Solution

The fourth proportional to 572.43, 793.27 and 561.49 is: 778.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.43 : 793.27 = 561.49 : x
  2. Step 2: Convert to fraction form
    572.43/793.27 = 561.49/x
  3. Step 3: Cross multiply
    572.43x = 793.27 × 561.49
  4. Step 4: Simplify right side
    572.43x = 445,413.17
  5. Step 5: Solve for x
    x = 445,413.17/572.43
  6. Step 6: Final answer
    x = 778.11

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.