Finding the Fourth Proportional to 213.60, 320.42 and 132.99
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Solution
The fourth proportional to 213.60, 320.42 and 132.99 is: 199.49
Step by Step Solution
- Step 1: Write the proportion equation
213.60 : 320.42 = 132.99 : x - Step 2: Convert to fraction form
213.60/320.42 = 132.99/x - Step 3: Cross multiply
213.60x = 320.42 × 132.99 - Step 4: Simplify right side
213.60x = 42,611.99 - Step 5: Solve for x
x = 42,611.99/213.60 - Step 6: Final answer
x = 199.49
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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.