Finding the Fourth Proportional to 398.99, 598.42 and 110.36
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Solution
The fourth proportional to 398.99, 598.42 and 110.36 is: 165.52
Step by Step Solution
- Step 1: Write the proportion equation
398.99 : 598.42 = 110.36 : x - Step 2: Convert to fraction form
398.99/598.42 = 110.36/x - Step 3: Cross multiply
398.99x = 598.42 × 110.36 - Step 4: Simplify right side
398.99x = 66,041.63 - Step 5: Solve for x
x = 66,041.63/398.99 - Step 6: Final answer
x = 165.52
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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.