Finding the Fourth Proportional to 143.24, 214.97 and 91.26
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Solution
The fourth proportional to 143.24, 214.97 and 91.26 is: 136.96
Step by Step Solution
- Step 1: Write the proportion equation
143.24 : 214.97 = 91.26 : x - Step 2: Convert to fraction form
143.24/214.97 = 91.26/x - Step 3: Cross multiply
143.24x = 214.97 × 91.26 - Step 4: Simplify right side
143.24x = 19,617.71 - Step 5: Solve for x
x = 19,617.71/143.24 - Step 6: Final answer
x = 136.96
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.