Finding the Fourth Proportional to 352.76, 486.68 and 221.67
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Solution
The fourth proportional to 352.76, 486.68 and 221.67 is: 305.82
Step by Step Solution
- Step 1: Write the proportion equation
352.76 : 486.68 = 221.67 : x - Step 2: Convert to fraction form
352.76/486.68 = 221.67/x - Step 3: Cross multiply
352.76x = 486.68 × 221.67 - Step 4: Simplify right side
352.76x = 107,881.25 - Step 5: Solve for x
x = 107,881.25/352.76 - Step 6: Final answer
x = 305.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.