Finding the Fourth Proportional to 262.19, 393.24 and 79.55
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Solution
The fourth proportional to 262.19, 393.24 and 79.55 is: 119.31
Step by Step Solution
- Step 1: Write the proportion equation
262.19 : 393.24 = 79.55 : x - Step 2: Convert to fraction form
262.19/393.24 = 79.55/x - Step 3: Cross multiply
262.19x = 393.24 × 79.55 - Step 4: Simplify right side
262.19x = 31,282.24 - Step 5: Solve for x
x = 31,282.24/262.19 - Step 6: Final answer
x = 119.31
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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.