Finding the Fourth Proportional to 319.84, 441.48 and 221.92
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Solution
The fourth proportional to 319.84, 441.48 and 221.92 is: 306.32
Step by Step Solution
- Step 1: Write the proportion equation
319.84 : 441.48 = 221.92 : x - Step 2: Convert to fraction form
319.84/441.48 = 221.92/x - Step 3: Cross multiply
319.84x = 441.48 × 221.92 - Step 4: Simplify right side
319.84x = 97,973.24 - Step 5: Solve for x
x = 97,973.24/319.84 - Step 6: Final answer
x = 306.32
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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.