Finding the Fourth Proportional to 665.74, 918.93 and 444.75
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Solution
The fourth proportional to 665.74, 918.93 and 444.75 is: 613.89
Step by Step Solution
- Step 1: Write the proportion equation
665.74 : 918.93 = 444.75 : x - Step 2: Convert to fraction form
665.74/918.93 = 444.75/x - Step 3: Cross multiply
665.74x = 918.93 × 444.75 - Step 4: Simplify right side
665.74x = 408,694.12 - Step 5: Solve for x
x = 408,694.12/665.74 - Step 6: Final answer
x = 613.89
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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.