Finding the Fourth Proportional to 122.41, 183.58 and 79.05
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Solution
The fourth proportional to 122.41, 183.58 and 79.05 is: 118.55
Step by Step Solution
- Step 1: Write the proportion equation
122.41 : 183.58 = 79.05 : x - Step 2: Convert to fraction form
122.41/183.58 = 79.05/x - Step 3: Cross multiply
122.41x = 183.58 × 79.05 - Step 4: Simplify right side
122.41x = 14,511.80 - Step 5: Solve for x
x = 14,511.80/122.41 - Step 6: Final answer
x = 118.55
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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.