Finding the Fourth Proportional to 959.99, 1,440 and 374.96
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Solution
The fourth proportional to 959.99, 1,440 and 374.96 is: 562.45
Step by Step Solution
- Step 1: Write the proportion equation
959.99 : 1,440 = 374.96 : x - Step 2: Convert to fraction form
959.99/1,440 = 374.96/x - Step 3: Cross multiply
959.99x = 1,440 × 374.96 - Step 4: Simplify right side
959.99x = 539,942.40 - Step 5: Solve for x
x = 539,942.40/959.99 - Step 6: Final answer
x = 562.45
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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.