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Finding the Fourth Proportional to 612.44, 845.21 and 350.45

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Solution

The fourth proportional to 612.44, 845.21 and 350.45 is: 483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.44 : 845.21 = 350.45 : x
  2. Step 2: Convert to fraction form
    612.44/845.21 = 350.45/x
  3. Step 3: Cross multiply
    612.44x = 845.21 × 350.45
  4. Step 4: Simplify right side
    612.44x = 296,197.87
  5. Step 5: Solve for x
    x = 296,197.87/612.44
  6. Step 6: Final answer
    x = 483.64

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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.