Finding the Fourth Proportional to 217.55, 326.21 and 124.99
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Solution
The fourth proportional to 217.55, 326.21 and 124.99 is: 187.42
Step by Step Solution
- Step 1: Write the proportion equation
217.55 : 326.21 = 124.99 : x - Step 2: Convert to fraction form
217.55/326.21 = 124.99/x - Step 3: Cross multiply
217.55x = 326.21 × 124.99 - Step 4: Simplify right side
217.55x = 40,771.36 - Step 5: Solve for x
x = 40,771.36/217.55 - Step 6: Final answer
x = 187.42
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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.