Finding the Fourth Proportional to 135.73, 203.87 and 84.40
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Solution
The fourth proportional to 135.73, 203.87 and 84.40 is: 126.77
Step by Step Solution
- Step 1: Write the proportion equation
135.73 : 203.87 = 84.40 : x - Step 2: Convert to fraction form
135.73/203.87 = 84.40/x - Step 3: Cross multiply
135.73x = 203.87 × 84.40 - Step 4: Simplify right side
135.73x = 17,206.63 - Step 5: Solve for x
x = 17,206.63/135.73 - Step 6: Final answer
x = 126.77
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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.