Finding the Fourth Proportional to 439.63, 606.99 and 274.08
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Solution
The fourth proportional to 439.63, 606.99 and 274.08 is: 378.43
Step by Step Solution
- Step 1: Write the proportion equation
439.63 : 606.99 = 274.08 : x - Step 2: Convert to fraction form
439.63/606.99 = 274.08/x - Step 3: Cross multiply
439.63x = 606.99 × 274.08 - Step 4: Simplify right side
439.63x = 166,367.12 - Step 5: Solve for x
x = 166,367.12/439.63 - Step 6: Final answer
x = 378.43
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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.