Finding the Fourth Proportional to 438.42, 605.19 and 291.26
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Solution
The fourth proportional to 438.42, 605.19 and 291.26 is: 402.05
Step by Step Solution
- Step 1: Write the proportion equation
438.42 : 605.19 = 291.26 : x - Step 2: Convert to fraction form
438.42/605.19 = 291.26/x - Step 3: Cross multiply
438.42x = 605.19 × 291.26 - Step 4: Simplify right side
438.42x = 176,270.24 - Step 5: Solve for x
x = 176,270.24/438.42 - Step 6: Final answer
x = 402.05
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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.