Finding the Fourth Proportional to 355.67, 533.29 and 138.99
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Solution
The fourth proportional to 355.67, 533.29 and 138.99 is: 208.40
Step by Step Solution
- Step 1: Write the proportion equation
355.67 : 533.29 = 138.99 : x - Step 2: Convert to fraction form
355.67/533.29 = 138.99/x - Step 3: Cross multiply
355.67x = 533.29 × 138.99 - Step 4: Simplify right side
355.67x = 74,121.98 - Step 5: Solve for x
x = 74,121.98/355.67 - Step 6: Final answer
x = 208.40
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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.