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Finding the Fourth Proportional to 608.82, 912.08 and 300.31

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Solution

The fourth proportional to 608.82, 912.08 and 300.31 is: 449.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.82 : 912.08 = 300.31 : x
  2. Step 2: Convert to fraction form
    608.82/912.08 = 300.31/x
  3. Step 3: Cross multiply
    608.82x = 912.08 × 300.31
  4. Step 4: Simplify right side
    608.82x = 273,905.80
  5. Step 5: Solve for x
    x = 273,905.80/608.82
  6. Step 6: Final answer
    x = 449.90

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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.