Finding the Fourth Proportional to 356.24, 491.60 and 208.99
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Solution
The fourth proportional to 356.24, 491.60 and 208.99 is: 288.40
Step by Step Solution
- Step 1: Write the proportion equation
356.24 : 491.60 = 208.99 : x - Step 2: Convert to fraction form
356.24/491.60 = 208.99/x - Step 3: Cross multiply
356.24x = 491.60 × 208.99 - Step 4: Simplify right side
356.24x = 102,739.48 - Step 5: Solve for x
x = 102,739.48/356.24 - Step 6: Final answer
x = 288.40
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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.