Finding the Fourth Proportional to 472.26, 708.39 and 147.63
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Solution
The fourth proportional to 472.26, 708.39 and 147.63 is: 221.45
Step by Step Solution
- Step 1: Write the proportion equation
472.26 : 708.39 = 147.63 : x - Step 2: Convert to fraction form
472.26/708.39 = 147.63/x - Step 3: Cross multiply
472.26x = 708.39 × 147.63 - Step 4: Simplify right side
472.26x = 104,579.62 - Step 5: Solve for x
x = 104,579.62/472.26 - Step 6: Final answer
x = 221.45
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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.