Finding the Fourth Proportional to 355.92, 491.36 and 245.99
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Solution
The fourth proportional to 355.92, 491.36 and 245.99 is: 339.59
Step by Step Solution
- Step 1: Write the proportion equation
355.92 : 491.36 = 245.99 : x - Step 2: Convert to fraction form
355.92/491.36 = 245.99/x - Step 3: Cross multiply
355.92x = 491.36 × 245.99 - Step 4: Simplify right side
355.92x = 120,867.80 - Step 5: Solve for x
x = 120,867.80/355.92 - Step 6: Final answer
x = 339.59
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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.