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Finding the Fourth Proportional to 443.55, 612.18 and 338.44

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Solution

The fourth proportional to 443.55, 612.18 and 338.44 is: 467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.55 : 612.18 = 338.44 : x
  2. Step 2: Convert to fraction form
    443.55/612.18 = 338.44/x
  3. Step 3: Cross multiply
    443.55x = 612.18 × 338.44
  4. Step 4: Simplify right side
    443.55x = 207,187.31
  5. Step 5: Solve for x
    x = 207,187.31/443.55
  6. Step 6: Final answer
    x = 467.11

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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.