Finding the Fourth Proportional to 354.40, 531.70 and 110.99
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Solution
The fourth proportional to 354.40, 531.70 and 110.99 is: 166.52
Step by Step Solution
- Step 1: Write the proportion equation
354.40 : 531.70 = 110.99 : x - Step 2: Convert to fraction form
354.40/531.70 = 110.99/x - Step 3: Cross multiply
354.40x = 531.70 × 110.99 - Step 4: Simplify right side
354.40x = 59,014.43 - Step 5: Solve for x
x = 59,014.43/354.40 - Step 6: Final answer
x = 166.52
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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.