Finding the Fourth Proportional to 178.25, 245.97 and 122.99
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Solution
The fourth proportional to 178.25, 245.97 and 122.99 is: 169.71
Step by Step Solution
- Step 1: Write the proportion equation
178.25 : 245.97 = 122.99 : x - Step 2: Convert to fraction form
178.25/245.97 = 122.99/x - Step 3: Cross multiply
178.25x = 245.97 × 122.99 - Step 4: Simplify right side
178.25x = 30,250.62 - Step 5: Solve for x
x = 30,250.62/178.25 - Step 6: Final answer
x = 169.71
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.