Finding the Fourth Proportional to 135.70, 203.37 and 74.75
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Solution
The fourth proportional to 135.70, 203.37 and 74.75 is: 112.03
Step by Step Solution
- Step 1: Write the proportion equation
135.70 : 203.37 = 74.75 : x - Step 2: Convert to fraction form
135.70/203.37 = 74.75/x - Step 3: Cross multiply
135.70x = 203.37 × 74.75 - Step 4: Simplify right side
135.70x = 15,201.91 - Step 5: Solve for x
x = 15,201.91/135.70 - Step 6: Final answer
x = 112.03
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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.