Finding the Fourth Proportional to 755.44, 1,132.08 and 430
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Solution
The fourth proportional to 755.44, 1,132.08 and 430 is: 644.39
Step by Step Solution
- Step 1: Write the proportion equation
755.44 : 1,132.08 = 430 : x - Step 2: Convert to fraction form
755.44/1,132.08 = 430/x - Step 3: Cross multiply
755.44x = 1,132.08 × 430 - Step 4: Simplify right side
755.44x = 486,794.40 - Step 5: Solve for x
x = 486,794.40/755.44 - Step 6: Final answer
x = 644.39
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.