Finding the Fourth Proportional to 199.44, 299.36 and 108.21
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Solution
The fourth proportional to 199.44, 299.36 and 108.21 is: 162.42
Step by Step Solution
- Step 1: Write the proportion equation
199.44 : 299.36 = 108.21 : x - Step 2: Convert to fraction form
199.44/299.36 = 108.21/x - Step 3: Cross multiply
199.44x = 299.36 × 108.21 - Step 4: Simplify right side
199.44x = 32,393.75 - Step 5: Solve for x
x = 32,393.75/199.44 - Step 6: Final answer
x = 162.42
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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.