Finding the Fourth Proportional to 132.74, 199.12 and 84.96
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Solution
The fourth proportional to 132.74, 199.12 and 84.96 is: 127.45
Step by Step Solution
- Step 1: Write the proportion equation
132.74 : 199.12 = 84.96 : x - Step 2: Convert to fraction form
132.74/199.12 = 84.96/x - Step 3: Cross multiply
132.74x = 199.12 × 84.96 - Step 4: Simplify right side
132.74x = 16,917.24 - Step 5: Solve for x
x = 16,917.24/132.74 - Step 6: Final answer
x = 127.45
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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.