Finding the Fourth Proportional to 386.15, 532.73 and 254.99
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Solution
The fourth proportional to 386.15, 532.73 and 254.99 is: 351.78
Step by Step Solution
- Step 1: Write the proportion equation
386.15 : 532.73 = 254.99 : x - Step 2: Convert to fraction form
386.15/532.73 = 254.99/x - Step 3: Cross multiply
386.15x = 532.73 × 254.99 - Step 4: Simplify right side
386.15x = 135,839.55 - Step 5: Solve for x
x = 135,839.55/386.15 - Step 6: Final answer
x = 351.78
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.