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Finding the Fourth Proportional to 416.22, 623.88 and 324.60

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Solution

The fourth proportional to 416.22, 623.88 and 324.60 is: 486.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.22 : 623.88 = 324.60 : x
  2. Step 2: Convert to fraction form
    416.22/623.88 = 324.60/x
  3. Step 3: Cross multiply
    416.22x = 623.88 × 324.60
  4. Step 4: Simplify right side
    416.22x = 202,511.45
  5. Step 5: Solve for x
    x = 202,511.45/416.22
  6. Step 6: Final answer
    x = 486.55

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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.