Finding the Fourth Proportional to 447.09, 616.95 and 247.91
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Solution
The fourth proportional to 447.09, 616.95 and 247.91 is: 342.09
Step by Step Solution
- Step 1: Write the proportion equation
447.09 : 616.95 = 247.91 : x - Step 2: Convert to fraction form
447.09/616.95 = 247.91/x - Step 3: Cross multiply
447.09x = 616.95 × 247.91 - Step 4: Simplify right side
447.09x = 152,944.99 - Step 5: Solve for x
x = 152,944.99/447.09 - Step 6: Final answer
x = 342.09
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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.