Finding the Fourth Proportional to 386.91, 533.62 and 246.99
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Solution
The fourth proportional to 386.91, 533.62 and 246.99 is: 340.64
Step by Step Solution
- Step 1: Write the proportion equation
386.91 : 533.62 = 246.99 : x - Step 2: Convert to fraction form
386.91/533.62 = 246.99/x - Step 3: Cross multiply
386.91x = 533.62 × 246.99 - Step 4: Simplify right side
386.91x = 131,798.80 - Step 5: Solve for x
x = 131,798.80/386.91 - Step 6: Final answer
x = 340.64
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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.