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Finding the Fourth Proportional to 452.28, 623.30 and 321.06

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Solution

The fourth proportional to 452.28, 623.30 and 321.06 is: 442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.28 : 623.30 = 321.06 : x
  2. Step 2: Convert to fraction form
    452.28/623.30 = 321.06/x
  3. Step 3: Cross multiply
    452.28x = 623.30 × 321.06
  4. Step 4: Simplify right side
    452.28x = 200,117.43
  5. Step 5: Solve for x
    x = 200,117.43/452.28
  6. Step 6: Final answer
    x = 442.46

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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.