Finding the Fourth Proportional to 368.99, 553.26 and 137.61
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Solution
The fourth proportional to 368.99, 553.26 and 137.61 is: 206.33
Step by Step Solution
- Step 1: Write the proportion equation
368.99 : 553.26 = 137.61 : x - Step 2: Convert to fraction form
368.99/553.26 = 137.61/x - Step 3: Cross multiply
368.99x = 553.26 × 137.61 - Step 4: Simplify right side
368.99x = 76,133.36 - Step 5: Solve for x
x = 76,133.36/368.99 - Step 6: Final answer
x = 206.33
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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.