Finding the Fourth Proportional to 319.39, 479.18 and 221.99
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Solution
The fourth proportional to 319.39, 479.18 and 221.99 is: 333.05
Step by Step Solution
- Step 1: Write the proportion equation
319.39 : 479.18 = 221.99 : x - Step 2: Convert to fraction form
319.39/479.18 = 221.99/x - Step 3: Cross multiply
319.39x = 479.18 × 221.99 - Step 4: Simplify right side
319.39x = 106,373.17 - Step 5: Solve for x
x = 106,373.17/319.39 - Step 6: Final answer
x = 333.05
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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.