Finding the Fourth Proportional to 438.35, 604.93 and 239.18
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Solution
The fourth proportional to 438.35, 604.93 and 239.18 is: 330.07
Step by Step Solution
- Step 1: Write the proportion equation
438.35 : 604.93 = 239.18 : x - Step 2: Convert to fraction form
438.35/604.93 = 239.18/x - Step 3: Cross multiply
438.35x = 604.93 × 239.18 - Step 4: Simplify right side
438.35x = 144,688.97 - Step 5: Solve for x
x = 144,688.97/438.35 - Step 6: Final answer
x = 330.07
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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.