Finding the Fourth Proportional to 424.74, 636.03 and 207.75
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Solution
The fourth proportional to 424.74, 636.03 and 207.75 is: 311.10
Step by Step Solution
- Step 1: Write the proportion equation
424.74 : 636.03 = 207.75 : x - Step 2: Convert to fraction form
424.74/636.03 = 207.75/x - Step 3: Cross multiply
424.74x = 636.03 × 207.75 - Step 4: Simplify right side
424.74x = 132,135.23 - Step 5: Solve for x
x = 132,135.23/424.74 - Step 6: Final answer
x = 311.10
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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.