Finding the Fourth Proportional to 136.56, 204.88 and 40.38
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Solution
The fourth proportional to 136.56, 204.88 and 40.38 is: 60.58
Step by Step Solution
- Step 1: Write the proportion equation
136.56 : 204.88 = 40.38 : x - Step 2: Convert to fraction form
136.56/204.88 = 40.38/x - Step 3: Cross multiply
136.56x = 204.88 × 40.38 - Step 4: Simplify right side
136.56x = 8,273.05 - Step 5: Solve for x
x = 8,273.05/136.56 - Step 6: Final answer
x = 60.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.