Finding the Fourth Proportional to 235.18, 352.97 and 91.00
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Solution
The fourth proportional to 235.18, 352.97 and 91.00 is: 136.57
Step by Step Solution
- Step 1: Write the proportion equation
235.18 : 352.97 = 91.00 : x - Step 2: Convert to fraction form
235.18/352.97 = 91.00/x - Step 3: Cross multiply
235.18x = 352.97 × 91.00 - Step 4: Simplify right side
235.18x = 32,118.05 - Step 5: Solve for x
x = 32,118.05/235.18 - Step 6: Final answer
x = 136.57
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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.