Finding the Fourth Proportional to 356.99, 492.65 and 201.74
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Solution
The fourth proportional to 356.99, 492.65 and 201.74 is: 278.40
Step by Step Solution
- Step 1: Write the proportion equation
356.99 : 492.65 = 201.74 : x - Step 2: Convert to fraction form
356.99/492.65 = 201.74/x - Step 3: Cross multiply
356.99x = 492.65 × 201.74 - Step 4: Simplify right side
356.99x = 99,387.21 - Step 5: Solve for x
x = 99,387.21/356.99 - Step 6: Final answer
x = 278.40
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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.