Finding the Fourth Proportional to 262.13, 393.19 and 91.13
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Solution
The fourth proportional to 262.13, 393.19 and 91.13 is: 136.69
Step by Step Solution
- Step 1: Write the proportion equation
262.13 : 393.19 = 91.13 : x - Step 2: Convert to fraction form
262.13/393.19 = 91.13/x - Step 3: Cross multiply
262.13x = 393.19 × 91.13 - Step 4: Simplify right side
262.13x = 35,829.21 - Step 5: Solve for x
x = 35,829.21/262.13 - Step 6: Final answer
x = 136.69
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Double scale
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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.