Finding the Fourth Proportional to 412.68, 618.99 and 181.57
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Solution
The fourth proportional to 412.68, 618.99 and 181.57 is: 272.35
Step by Step Solution
- Step 1: Write the proportion equation
412.68 : 618.99 = 181.57 : x - Step 2: Convert to fraction form
412.68/618.99 = 181.57/x - Step 3: Cross multiply
412.68x = 618.99 × 181.57 - Step 4: Simplify right side
412.68x = 112,392.14 - Step 5: Solve for x
x = 112,392.14/412.68 - Step 6: Final answer
x = 272.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.