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Finding the Fourth Proportional to 452.46, 623.52 and 321.24

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Solution

The fourth proportional to 452.46, 623.52 and 321.24 is: 442.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.46 : 623.52 = 321.24 : x
  2. Step 2: Convert to fraction form
    452.46/623.52 = 321.24/x
  3. Step 3: Cross multiply
    452.46x = 623.52 × 321.24
  4. Step 4: Simplify right side
    452.46x = 200,299.56
  5. Step 5: Solve for x
    x = 200,299.56/452.46
  6. Step 6: Final answer
    x = 442.69

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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.