Finding the Fourth Proportional to 157.95, 236.93 and 76.68
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Solution
The fourth proportional to 157.95, 236.93 and 76.68 is: 115.02
Step by Step Solution
- Step 1: Write the proportion equation
157.95 : 236.93 = 76.68 : x - Step 2: Convert to fraction form
157.95/236.93 = 76.68/x - Step 3: Cross multiply
157.95x = 236.93 × 76.68 - Step 4: Simplify right side
157.95x = 18,167.41 - Step 5: Solve for x
x = 18,167.41/157.95 - Step 6: Final answer
x = 115.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.