Finding the Fourth Proportional to 407.75, 611.36 and 163.99
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Solution
The fourth proportional to 407.75, 611.36 and 163.99 is: 245.88
Step by Step Solution
- Step 1: Write the proportion equation
407.75 : 611.36 = 163.99 : x - Step 2: Convert to fraction form
407.75/611.36 = 163.99/x - Step 3: Cross multiply
407.75x = 611.36 × 163.99 - Step 4: Simplify right side
407.75x = 100,256.93 - Step 5: Solve for x
x = 100,256.93/407.75 - Step 6: Final answer
x = 245.88
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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.