Finding the Fourth Proportional to 319.44, 440.97 and 221.58
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Solution
The fourth proportional to 319.44, 440.97 and 221.58 is: 305.88
Step by Step Solution
- Step 1: Write the proportion equation
319.44 : 440.97 = 221.58 : x - Step 2: Convert to fraction form
319.44/440.97 = 221.58/x - Step 3: Cross multiply
319.44x = 440.97 × 221.58 - Step 4: Simplify right side
319.44x = 97,710.13 - Step 5: Solve for x
x = 97,710.13/319.44 - Step 6: Final answer
x = 305.88
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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.