Finding the Fourth Proportional to 386.76, 579.62 and 170.08
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Solution
The fourth proportional to 386.76, 579.62 and 170.08 is: 254.89
Step by Step Solution
- Step 1: Write the proportion equation
386.76 : 579.62 = 170.08 : x - Step 2: Convert to fraction form
386.76/579.62 = 170.08/x - Step 3: Cross multiply
386.76x = 579.62 × 170.08 - Step 4: Simplify right side
386.76x = 98,581.77 - Step 5: Solve for x
x = 98,581.77/386.76 - Step 6: Final answer
x = 254.89
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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.