Finding the Fourth Proportional to 368.99, 509.21 and 203.21
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Solution
The fourth proportional to 368.99, 509.21 and 203.21 is: 280.43
Step by Step Solution
- Step 1: Write the proportion equation
368.99 : 509.21 = 203.21 : x - Step 2: Convert to fraction form
368.99/509.21 = 203.21/x - Step 3: Cross multiply
368.99x = 509.21 × 203.21 - Step 4: Simplify right side
368.99x = 103,476.56 - Step 5: Solve for x
x = 103,476.56/368.99 - Step 6: Final answer
x = 280.43
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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.