Finding the Fourth Proportional to 402.99, 604.26 and 207.78
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Solution
The fourth proportional to 402.99, 604.26 and 207.78 is: 311.55
Step by Step Solution
- Step 1: Write the proportion equation
402.99 : 604.26 = 207.78 : x - Step 2: Convert to fraction form
402.99/604.26 = 207.78/x - Step 3: Cross multiply
402.99x = 604.26 × 207.78 - Step 4: Simplify right side
402.99x = 125,553.14 - Step 5: Solve for x
x = 125,553.14/402.99 - Step 6: Final answer
x = 311.55
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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.