Finding the Fourth Proportional to 368.97, 509.21 and 203.22
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Solution
The fourth proportional to 368.97, 509.21 and 203.22 is: 280.45
Step by Step Solution
- Step 1: Write the proportion equation
368.97 : 509.21 = 203.22 : x - Step 2: Convert to fraction form
368.97/509.21 = 203.22/x - Step 3: Cross multiply
368.97x = 509.21 × 203.22 - Step 4: Simplify right side
368.97x = 103,479.11 - Step 5: Solve for x
x = 103,479.11/368.97 - Step 6: Final answer
x = 280.45
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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.