Finding the Fourth Proportional to 291.58, 437.44 and 129.28
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Solution
The fourth proportional to 291.58, 437.44 and 129.28 is: 193.95
Step by Step Solution
- Step 1: Write the proportion equation
291.58 : 437.44 = 129.28 : x - Step 2: Convert to fraction form
291.58/437.44 = 129.28/x - Step 3: Cross multiply
291.58x = 437.44 × 129.28 - Step 4: Simplify right side
291.58x = 56,552.24 - Step 5: Solve for x
x = 56,552.24/291.58 - Step 6: Final answer
x = 193.95
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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.