Finding the Fourth Proportional to 403.62, 605.52 and 115.08
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Solution
The fourth proportional to 403.62, 605.52 and 115.08 is: 172.65
Step by Step Solution
- Step 1: Write the proportion equation
403.62 : 605.52 = 115.08 : x - Step 2: Convert to fraction form
403.62/605.52 = 115.08/x - Step 3: Cross multiply
403.62x = 605.52 × 115.08 - Step 4: Simplify right side
403.62x = 69,683.24 - Step 5: Solve for x
x = 69,683.24/403.62 - Step 6: Final answer
x = 172.65
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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.