Finding the Fourth Proportional to 157.26, 235.62 and 143.76
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Solution
The fourth proportional to 157.26, 235.62 and 143.76 is: 215.39
Step by Step Solution
- Step 1: Write the proportion equation
157.26 : 235.62 = 143.76 : x - Step 2: Convert to fraction form
157.26/235.62 = 143.76/x - Step 3: Cross multiply
157.26x = 235.62 × 143.76 - Step 4: Simplify right side
157.26x = 33,872.73 - Step 5: Solve for x
x = 33,872.73/157.26 - Step 6: Final answer
x = 215.39
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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.