Finding the Fourth Proportional to 447.68, 618.09 and 307.76
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Solution
The fourth proportional to 447.68, 618.09 and 307.76 is: 424.90
Step by Step Solution
- Step 1: Write the proportion equation
447.68 : 618.09 = 307.76 : x - Step 2: Convert to fraction form
447.68/618.09 = 307.76/x - Step 3: Cross multiply
447.68x = 618.09 × 307.76 - Step 4: Simplify right side
447.68x = 190,219.13 - Step 5: Solve for x
x = 190,219.13/447.68 - Step 6: Final answer
x = 424.90
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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.