Finding the Fourth Proportional to 258.84, 388.18 and 170.99
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Solution
The fourth proportional to 258.84, 388.18 and 170.99 is: 256.43
Step by Step Solution
- Step 1: Write the proportion equation
258.84 : 388.18 = 170.99 : x - Step 2: Convert to fraction form
258.84/388.18 = 170.99/x - Step 3: Cross multiply
258.84x = 388.18 × 170.99 - Step 4: Simplify right side
258.84x = 66,374.90 - Step 5: Solve for x
x = 66,374.90/258.84 - Step 6: Final answer
x = 256.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.