Finding the Fourth Proportional to 291.52, 437.15 and 86.02
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Solution
The fourth proportional to 291.52, 437.15 and 86.02 is: 128.99
Step by Step Solution
- Step 1: Write the proportion equation
291.52 : 437.15 = 86.02 : x - Step 2: Convert to fraction form
291.52/437.15 = 86.02/x - Step 3: Cross multiply
291.52x = 437.15 × 86.02 - Step 4: Simplify right side
291.52x = 37,603.17 - Step 5: Solve for x
x = 37,603.17/291.52 - Step 6: Final answer
x = 128.99
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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.