Finding the Fourth Proportional to 178.36, 246.11 and 99.68
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Solution
The fourth proportional to 178.36, 246.11 and 99.68 is: 137.54
Step by Step Solution
- Step 1: Write the proportion equation
178.36 : 246.11 = 99.68 : x - Step 2: Convert to fraction form
178.36/246.11 = 99.68/x - Step 3: Cross multiply
178.36x = 246.11 × 99.68 - Step 4: Simplify right side
178.36x = 24,532.24 - Step 5: Solve for x
x = 24,532.24/178.36 - Step 6: Final answer
x = 137.54
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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.