Finding the Fourth Proportional to 178.34, 246.05 and 122.99
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Solution
The fourth proportional to 178.34, 246.05 and 122.99 is: 169.68
Step by Step Solution
- Step 1: Write the proportion equation
178.34 : 246.05 = 122.99 : x - Step 2: Convert to fraction form
178.34/246.05 = 122.99/x - Step 3: Cross multiply
178.34x = 246.05 × 122.99 - Step 4: Simplify right side
178.34x = 30,260.31 - Step 5: Solve for x
x = 30,260.31/178.34 - Step 6: Final answer
x = 169.68
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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.