Finding the Fourth Proportional to 386.84, 533.07 and 275.99
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Solution
The fourth proportional to 386.84, 533.07 and 275.99 is: 380.32
Step by Step Solution
- Step 1: Write the proportion equation
386.84 : 533.07 = 275.99 : x - Step 2: Convert to fraction form
386.84/533.07 = 275.99/x - Step 3: Cross multiply
386.84x = 533.07 × 275.99 - Step 4: Simplify right side
386.84x = 147,121.99 - Step 5: Solve for x
x = 147,121.99/386.84 - Step 6: Final answer
x = 380.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.