Finding the Fourth Proportional to 644.04, 965.76 and 259
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Solution
The fourth proportional to 644.04, 965.76 and 259 is: 388.38
Step by Step Solution
- Step 1: Write the proportion equation
644.04 : 965.76 = 259 : x - Step 2: Convert to fraction form
644.04/965.76 = 259/x - Step 3: Cross multiply
644.04x = 965.76 × 259 - Step 4: Simplify right side
644.04x = 250,131.84 - Step 5: Solve for x
x = 250,131.84/644.04 - Step 6: Final answer
x = 388.38
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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.