Finding the Fourth Proportional to 178.58, 246.40 and 108.62
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Solution
The fourth proportional to 178.58, 246.40 and 108.62 is: 149.87
Step by Step Solution
- Step 1: Write the proportion equation
178.58 : 246.40 = 108.62 : x - Step 2: Convert to fraction form
178.58/246.40 = 108.62/x - Step 3: Cross multiply
178.58x = 246.40 × 108.62 - Step 4: Simplify right side
178.58x = 26,763.97 - Step 5: Solve for x
x = 26,763.97/178.58 - Step 6: Final answer
x = 149.87
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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.