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Finding the Fourth Proportional to 608.70, 911.62 and 299.58

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Solution

The fourth proportional to 608.70, 911.62 and 299.58 is: 448.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.70 : 911.62 = 299.58 : x
  2. Step 2: Convert to fraction form
    608.70/911.62 = 299.58/x
  3. Step 3: Cross multiply
    608.70x = 911.62 × 299.58
  4. Step 4: Simplify right side
    608.70x = 273,103.12
  5. Step 5: Solve for x
    x = 273,103.12/608.70
  6. Step 6: Final answer
    x = 448.67

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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.