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Finding the Fourth Proportional to 452.22, 623.97 and 321.32

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Solution

The fourth proportional to 452.22, 623.97 and 321.32 is: 443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.22 : 623.97 = 321.32 : x
  2. Step 2: Convert to fraction form
    452.22/623.97 = 321.32/x
  3. Step 3: Cross multiply
    452.22x = 623.97 × 321.32
  4. Step 4: Simplify right side
    452.22x = 200,490.92
  5. Step 5: Solve for x
    x = 200,490.92/452.22
  6. Step 6: Final answer
    x = 443.35

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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.