Finding the Fourth Proportional to 199.99, 300.21 and 108.91
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Solution
The fourth proportional to 199.99, 300.21 and 108.91 is: 163.49
Step by Step Solution
- Step 1: Write the proportion equation
199.99 : 300.21 = 108.91 : x - Step 2: Convert to fraction form
199.99/300.21 = 108.91/x - Step 3: Cross multiply
199.99x = 300.21 × 108.91 - Step 4: Simplify right side
199.99x = 32,695.87 - Step 5: Solve for x
x = 32,695.87/199.99 - Step 6: Final answer
x = 163.49
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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.