Finding the Fourth Proportional to 412.11, 618.08 and 119.58
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Solution
The fourth proportional to 412.11, 618.08 and 119.58 is: 179.34
Step by Step Solution
- Step 1: Write the proportion equation
412.11 : 618.08 = 119.58 : x - Step 2: Convert to fraction form
412.11/618.08 = 119.58/x - Step 3: Cross multiply
412.11x = 618.08 × 119.58 - Step 4: Simplify right side
412.11x = 73,909.41 - Step 5: Solve for x
x = 73,909.41/412.11 - Step 6: Final answer
x = 179.34
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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.