Finding the Fourth Proportional to 320.49, 441.99 and 221.13
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Solution
The fourth proportional to 320.49, 441.99 and 221.13 is: 304.96
Step by Step Solution
- Step 1: Write the proportion equation
320.49 : 441.99 = 221.13 : x - Step 2: Convert to fraction form
320.49/441.99 = 221.13/x - Step 3: Cross multiply
320.49x = 441.99 × 221.13 - Step 4: Simplify right side
320.49x = 97,737.25 - Step 5: Solve for x
x = 97,737.25/320.49 - Step 6: Final answer
x = 304.96
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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.