Finding the Fourth Proportional to 445.25, 612.99 and 387.01
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Solution
The fourth proportional to 445.25, 612.99 and 387.01 is: 532.81
Step by Step Solution
- Step 1: Write the proportion equation
445.25 : 612.99 = 387.01 : x - Step 2: Convert to fraction form
445.25/612.99 = 387.01/x - Step 3: Cross multiply
445.25x = 612.99 × 387.01 - Step 4: Simplify right side
445.25x = 237,233.26 - Step 5: Solve for x
x = 237,233.26/445.25 - Step 6: Final answer
x = 532.81
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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.