Finding the Fourth Proportional to 438.08, 604.84 and 305.26
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Solution
The fourth proportional to 438.08, 604.84 and 305.26 is: 421.45
Step by Step Solution
- Step 1: Write the proportion equation
438.08 : 604.84 = 305.26 : x - Step 2: Convert to fraction form
438.08/604.84 = 305.26/x - Step 3: Cross multiply
438.08x = 604.84 × 305.26 - Step 4: Simplify right side
438.08x = 184,631.18 - Step 5: Solve for x
x = 184,631.18/438.08 - Step 6: Final answer
x = 421.45
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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.