Finding the Fourth Proportional to 122.11, 182.99 and 104.68
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Solution
The fourth proportional to 122.11, 182.99 and 104.68 is: 156.87
Step by Step Solution
- Step 1: Write the proportion equation
122.11 : 182.99 = 104.68 : x - Step 2: Convert to fraction form
122.11/182.99 = 104.68/x - Step 3: Cross multiply
122.11x = 182.99 × 104.68 - Step 4: Simplify right side
122.11x = 19,155.41 - Step 5: Solve for x
x = 19,155.41/122.11 - Step 6: Final answer
x = 156.87
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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.