Finding the Fourth Proportional to 438.64, 657.95 and 194.99
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Solution
The fourth proportional to 438.64, 657.95 and 194.99 is: 292.47
Step by Step Solution
- Step 1: Write the proportion equation
438.64 : 657.95 = 194.99 : x - Step 2: Convert to fraction form
438.64/657.95 = 194.99/x - Step 3: Cross multiply
438.64x = 657.95 × 194.99 - Step 4: Simplify right side
438.64x = 128,289.41 - Step 5: Solve for x
x = 128,289.41/438.64 - Step 6: Final answer
x = 292.47
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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.