Finding the Fourth Proportional to 445.08, 614.08 and 305.44
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Solution
The fourth proportional to 445.08, 614.08 and 305.44 is: 421.42
Step by Step Solution
- Step 1: Write the proportion equation
445.08 : 614.08 = 305.44 : x - Step 2: Convert to fraction form
445.08/614.08 = 305.44/x - Step 3: Cross multiply
445.08x = 614.08 × 305.44 - Step 4: Simplify right side
445.08x = 187,564.60 - Step 5: Solve for x
x = 187,564.60/445.08 - Step 6: Final answer
x = 421.42
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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.