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Finding the Fourth Proportional to 623.88, 936.12 and 299.20

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Solution

The fourth proportional to 623.88, 936.12 and 299.20 is: 448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.88 : 936.12 = 299.20 : x
  2. Step 2: Convert to fraction form
    623.88/936.12 = 299.20/x
  3. Step 3: Cross multiply
    623.88x = 936.12 × 299.20
  4. Step 4: Simplify right side
    623.88x = 280,087.10
  5. Step 5: Solve for x
    x = 280,087.10/623.88
  6. Step 6: Final answer
    x = 448.94

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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.