Finding the Fourth Proportional to 291.70, 402.36 and 239.26
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Solution
The fourth proportional to 291.70, 402.36 and 239.26 is: 330.03
Step by Step Solution
- Step 1: Write the proportion equation
291.70 : 402.36 = 239.26 : x - Step 2: Convert to fraction form
291.70/402.36 = 239.26/x - Step 3: Cross multiply
291.70x = 402.36 × 239.26 - Step 4: Simplify right side
291.70x = 96,268.65 - Step 5: Solve for x
x = 96,268.65/291.70 - Step 6: Final answer
x = 330.03
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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.