Finding the Fourth Proportional to 400.60, 600.74 and 140.53
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Solution
The fourth proportional to 400.60, 600.74 and 140.53 is: 210.74
Step by Step Solution
- Step 1: Write the proportion equation
400.60 : 600.74 = 140.53 : x - Step 2: Convert to fraction form
400.60/600.74 = 140.53/x - Step 3: Cross multiply
400.60x = 600.74 × 140.53 - Step 4: Simplify right side
400.60x = 84,421.99 - Step 5: Solve for x
x = 84,421.99/400.60 - Step 6: Final answer
x = 210.74
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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.