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Finding the Fourth Proportional to 565.26, 847.20 and 408.84

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Solution

The fourth proportional to 565.26, 847.20 and 408.84 is: 612.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.26 : 847.20 = 408.84 : x
  2. Step 2: Convert to fraction form
    565.26/847.20 = 408.84/x
  3. Step 3: Cross multiply
    565.26x = 847.20 × 408.84
  4. Step 4: Simplify right side
    565.26x = 346,369.25
  5. Step 5: Solve for x
    x = 346,369.25/565.26
  6. Step 6: Final answer
    x = 612.76

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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.