Finding the Fourth Proportional to 445.10, 614.21 and 258.63
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Solution
The fourth proportional to 445.10, 614.21 and 258.63 is: 356.89
Step by Step Solution
- Step 1: Write the proportion equation
445.10 : 614.21 = 258.63 : x - Step 2: Convert to fraction form
445.10/614.21 = 258.63/x - Step 3: Cross multiply
445.10x = 614.21 × 258.63 - Step 4: Simplify right side
445.10x = 158,853.13 - Step 5: Solve for x
x = 158,853.13/445.10 - Step 6: Final answer
x = 356.89
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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.