Finding the Fourth Proportional to 135.40, 203.21 and 94.90
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Solution
The fourth proportional to 135.40, 203.21 and 94.90 is: 142.43
Step by Step Solution
- Step 1: Write the proportion equation
135.40 : 203.21 = 94.90 : x - Step 2: Convert to fraction form
135.40/203.21 = 94.90/x - Step 3: Cross multiply
135.40x = 203.21 × 94.90 - Step 4: Simplify right side
135.40x = 19,284.63 - Step 5: Solve for x
x = 19,284.63/135.40 - Step 6: Final answer
x = 142.43
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.