Finding the Fourth Proportional to 142.63, 213.96 and 55.99
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Solution
The fourth proportional to 142.63, 213.96 and 55.99 is: 83.99
Step by Step Solution
- Step 1: Write the proportion equation
142.63 : 213.96 = 55.99 : x - Step 2: Convert to fraction form
142.63/213.96 = 55.99/x - Step 3: Cross multiply
142.63x = 213.96 × 55.99 - Step 4: Simplify right side
142.63x = 11,979.62 - Step 5: Solve for x
x = 11,979.62/142.63 - Step 6: Final answer
x = 83.99
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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.