Finding the Fourth Proportional to 386.44, 579.67 and 328.53
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Solution
The fourth proportional to 386.44, 579.67 and 328.53 is: 492.80
Step by Step Solution
- Step 1: Write the proportion equation
386.44 : 579.67 = 328.53 : x - Step 2: Convert to fraction form
386.44/579.67 = 328.53/x - Step 3: Cross multiply
386.44x = 579.67 × 328.53 - Step 4: Simplify right side
386.44x = 190,438.99 - Step 5: Solve for x
x = 190,438.99/386.44 - Step 6: Final answer
x = 492.80
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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.