Finding the Fourth Proportional to 400.74, 553.11 and 235.02
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Solution
The fourth proportional to 400.74, 553.11 and 235.02 is: 324.38
Step by Step Solution
- Step 1: Write the proportion equation
400.74 : 553.11 = 235.02 : x - Step 2: Convert to fraction form
400.74/553.11 = 235.02/x - Step 3: Cross multiply
400.74x = 553.11 × 235.02 - Step 4: Simplify right side
400.74x = 129,991.91 - Step 5: Solve for x
x = 129,991.91/400.74 - Step 6: Final answer
x = 324.38
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.