Finding the Fourth Proportional to 157.44, 216.99 and 108.23
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Solution
The fourth proportional to 157.44, 216.99 and 108.23 is: 149.17
Step by Step Solution
- Step 1: Write the proportion equation
157.44 : 216.99 = 108.23 : x - Step 2: Convert to fraction form
157.44/216.99 = 108.23/x - Step 3: Cross multiply
157.44x = 216.99 × 108.23 - Step 4: Simplify right side
157.44x = 23,485.10 - Step 5: Solve for x
x = 23,485.10/157.44 - Step 6: Final answer
x = 149.17
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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.