Finding the Fourth Proportional to 157.70, 217.53 and 110.99
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Solution
The fourth proportional to 157.70, 217.53 and 110.99 is: 153.10
Step by Step Solution
- Step 1: Write the proportion equation
157.70 : 217.53 = 110.99 : x - Step 2: Convert to fraction form
157.70/217.53 = 110.99/x - Step 3: Cross multiply
157.70x = 217.53 × 110.99 - Step 4: Simplify right side
157.70x = 24,142.57 - Step 5: Solve for x
x = 24,142.57/157.70 - Step 6: Final answer
x = 153.10
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.