Finding the Fourth Proportional to 157.95, 236.87 and 49.70
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Solution
The fourth proportional to 157.95, 236.87 and 49.70 is: 74.53
Step by Step Solution
- Step 1: Write the proportion equation
157.95 : 236.87 = 49.70 : x - Step 2: Convert to fraction form
157.95/236.87 = 49.70/x - Step 3: Cross multiply
157.95x = 236.87 × 49.70 - Step 4: Simplify right side
157.95x = 11,772.44 - Step 5: Solve for x
x = 11,772.44/157.95 - Step 6: Final answer
x = 74.53
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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.