Finding the Fourth Proportional to 157.08, 235.52 and 113.70
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Solution
The fourth proportional to 157.08, 235.52 and 113.70 is: 170.48
Step by Step Solution
- Step 1: Write the proportion equation
157.08 : 235.52 = 113.70 : x - Step 2: Convert to fraction form
157.08/235.52 = 113.70/x - Step 3: Cross multiply
157.08x = 235.52 × 113.70 - Step 4: Simplify right side
157.08x = 26,778.62 - Step 5: Solve for x
x = 26,778.62/157.08 - Step 6: Final answer
x = 170.48
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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.