Finding the Fourth Proportional to 178.91, 246.97 and 122.91
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Solution
The fourth proportional to 178.91, 246.97 and 122.91 is: 169.67
Step by Step Solution
- Step 1: Write the proportion equation
178.91 : 246.97 = 122.91 : x - Step 2: Convert to fraction form
178.91/246.97 = 122.91/x - Step 3: Cross multiply
178.91x = 246.97 × 122.91 - Step 4: Simplify right side
178.91x = 30,355.08 - Step 5: Solve for x
x = 30,355.08/178.91 - Step 6: Final answer
x = 169.67
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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.