Finding the Fourth Proportional to 421.02, 630.99 and 394.02
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Solution
The fourth proportional to 421.02, 630.99 and 394.02 is: 590.52
Step by Step Solution
- Step 1: Write the proportion equation
421.02 : 630.99 = 394.02 : x - Step 2: Convert to fraction form
421.02/630.99 = 394.02/x - Step 3: Cross multiply
421.02x = 630.99 × 394.02 - Step 4: Simplify right side
421.02x = 248,622.68 - Step 5: Solve for x
x = 248,622.68/421.02 - Step 6: Final answer
x = 590.52
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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.