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Finding the Fourth Proportional to 608.23, 912.30 and 299.85

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Solution

The fourth proportional to 608.23, 912.30 and 299.85 is: 449.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.23 : 912.30 = 299.85 : x
  2. Step 2: Convert to fraction form
    608.23/912.30 = 299.85/x
  3. Step 3: Cross multiply
    608.23x = 912.30 × 299.85
  4. Step 4: Simplify right side
    608.23x = 273,553.16
  5. Step 5: Solve for x
    x = 273,553.16/608.23
  6. Step 6: Final answer
    x = 449.75

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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.