Finding the Fourth Proportional to 178.60, 246.18 and 149.80
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Solution
The fourth proportional to 178.60, 246.18 and 149.80 is: 206.48
Step by Step Solution
- Step 1: Write the proportion equation
178.60 : 246.18 = 149.80 : x - Step 2: Convert to fraction form
178.60/246.18 = 149.80/x - Step 3: Cross multiply
178.60x = 246.18 × 149.80 - Step 4: Simplify right side
178.60x = 36,877.76 - Step 5: Solve for x
x = 36,877.76/178.60 - Step 6: Final answer
x = 206.48
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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.