Finding the Fourth Proportional to 157.36, 235.87 and 84.19
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Solution
The fourth proportional to 157.36, 235.87 and 84.19 is: 126.19
Step by Step Solution
- Step 1: Write the proportion equation
157.36 : 235.87 = 84.19 : x - Step 2: Convert to fraction form
157.36/235.87 = 84.19/x - Step 3: Cross multiply
157.36x = 235.87 × 84.19 - Step 4: Simplify right side
157.36x = 19,857.10 - Step 5: Solve for x
x = 19,857.10/157.36 - Step 6: Final answer
x = 126.19
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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.