Finding the Fourth Proportional to 122.08, 182.91 and 87.79
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Solution
The fourth proportional to 122.08, 182.91 and 87.79 is: 131.53
Step by Step Solution
- Step 1: Write the proportion equation
122.08 : 182.91 = 87.79 : x - Step 2: Convert to fraction form
122.08/182.91 = 87.79/x - Step 3: Cross multiply
122.08x = 182.91 × 87.79 - Step 4: Simplify right side
122.08x = 16,057.67 - Step 5: Solve for x
x = 16,057.67/122.08 - Step 6: Final answer
x = 131.53
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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.