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Finding the Fourth Proportional to 612.18, 845.22 and 573

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Solution

The fourth proportional to 612.18, 845.22 and 573 is: 791.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.18 : 845.22 = 573 : x
  2. Step 2: Convert to fraction form
    612.18/845.22 = 573/x
  3. Step 3: Cross multiply
    612.18x = 845.22 × 573
  4. Step 4: Simplify right side
    612.18x = 484,311.06
  5. Step 5: Solve for x
    x = 484,311.06/612.18
  6. Step 6: Final answer
    x = 791.13

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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.