Finding the Fourth Proportional to 398.81, 596.99 and 368.43
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Solution
The fourth proportional to 398.81, 596.99 and 368.43 is: 551.52
Step by Step Solution
- Step 1: Write the proportion equation
398.81 : 596.99 = 368.43 : x - Step 2: Convert to fraction form
398.81/596.99 = 368.43/x - Step 3: Cross multiply
398.81x = 596.99 × 368.43 - Step 4: Simplify right side
398.81x = 219,947.18 - Step 5: Solve for x
x = 219,947.18/398.81 - Step 6: Final answer
x = 551.52
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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.