Finding the Fourth Proportional to 135.92, 203.52 and 74.75
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Solution
The fourth proportional to 135.92, 203.52 and 74.75 is: 111.92
Step by Step Solution
- Step 1: Write the proportion equation
135.92 : 203.52 = 74.75 : x - Step 2: Convert to fraction form
135.92/203.52 = 74.75/x - Step 3: Cross multiply
135.92x = 203.52 × 74.75 - Step 4: Simplify right side
135.92x = 15,212.10 - Step 5: Solve for x
x = 15,212.10/135.92 - Step 6: Final answer
x = 111.92
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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.