Finding the Fourth Proportional to 235.14, 352.68 and 81.06
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Solution
The fourth proportional to 235.14, 352.68 and 81.06 is: 121.58
Step by Step Solution
- Step 1: Write the proportion equation
235.14 : 352.68 = 81.06 : x - Step 2: Convert to fraction form
235.14/352.68 = 81.06/x - Step 3: Cross multiply
235.14x = 352.68 × 81.06 - Step 4: Simplify right side
235.14x = 28,588.24 - Step 5: Solve for x
x = 28,588.24/235.14 - Step 6: Final answer
x = 121.58
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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.