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Finding the Fourth Proportional to 565.47, 847.68 and 218.73

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Solution

The fourth proportional to 565.47, 847.68 and 218.73 is: 327.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.47 : 847.68 = 218.73 : x
  2. Step 2: Convert to fraction form
    565.47/847.68 = 218.73/x
  3. Step 3: Cross multiply
    565.47x = 847.68 × 218.73
  4. Step 4: Simplify right side
    565.47x = 185,413.05
  5. Step 5: Solve for x
    x = 185,413.05/565.47
  6. Step 6: Final answer
    x = 327.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.