Finding the Fourth Proportional to 387.06, 580.26 and 170.58
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Solution
The fourth proportional to 387.06, 580.26 and 170.58 is: 255.72
Step by Step Solution
- Step 1: Write the proportion equation
387.06 : 580.26 = 170.58 : x - Step 2: Convert to fraction form
387.06/580.26 = 170.58/x - Step 3: Cross multiply
387.06x = 580.26 × 170.58 - Step 4: Simplify right side
387.06x = 98,980.75 - Step 5: Solve for x
x = 98,980.75/387.06 - Step 6: Final answer
x = 255.72
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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.