Finding the Fourth Proportional to 157.70, 236.36 and 70.94
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Solution
The fourth proportional to 157.70, 236.36 and 70.94 is: 106.32
Step by Step Solution
- Step 1: Write the proportion equation
157.70 : 236.36 = 70.94 : x - Step 2: Convert to fraction form
157.70/236.36 = 70.94/x - Step 3: Cross multiply
157.70x = 236.36 × 70.94 - Step 4: Simplify right side
157.70x = 16,767.38 - Step 5: Solve for x
x = 16,767.38/157.70 - Step 6: Final answer
x = 106.32
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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.