Finding the Fourth Proportional to 157.99, 217.86 and 108.79
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Solution
The fourth proportional to 157.99, 217.86 and 108.79 is: 150.02
Step by Step Solution
- Step 1: Write the proportion equation
157.99 : 217.86 = 108.79 : x - Step 2: Convert to fraction form
157.99/217.86 = 108.79/x - Step 3: Cross multiply
157.99x = 217.86 × 108.79 - Step 4: Simplify right side
157.99x = 23,700.99 - Step 5: Solve for x
x = 23,700.99/157.99 - Step 6: Final answer
x = 150.02
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.