Finding the Fourth Proportional to 393.06, 589.79 and 219.62
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Solution
The fourth proportional to 393.06, 589.79 and 219.62 is: 329.55
Step by Step Solution
- Step 1: Write the proportion equation
393.06 : 589.79 = 219.62 : x - Step 2: Convert to fraction form
393.06/589.79 = 219.62/x - Step 3: Cross multiply
393.06x = 589.79 × 219.62 - Step 4: Simplify right side
393.06x = 129,531.70 - Step 5: Solve for x
x = 129,531.70/393.06 - Step 6: Final answer
x = 329.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.