Finding the Fourth Proportional to 249.36, 374.08 and 87.09
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Solution
The fourth proportional to 249.36, 374.08 and 87.09 is: 130.65
Step by Step Solution
- Step 1: Write the proportion equation
249.36 : 374.08 = 87.09 : x - Step 2: Convert to fraction form
249.36/374.08 = 87.09/x - Step 3: Cross multiply
249.36x = 374.08 × 87.09 - Step 4: Simplify right side
249.36x = 32,578.63 - Step 5: Solve for x
x = 32,578.63/249.36 - Step 6: Final answer
x = 130.65
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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.