Finding the Fourth Proportional to 156.31, 234.71 and 102.55
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Solution
The fourth proportional to 156.31, 234.71 and 102.55 is: 153.99
Step by Step Solution
- Step 1: Write the proportion equation
156.31 : 234.71 = 102.55 : x - Step 2: Convert to fraction form
156.31/234.71 = 102.55/x - Step 3: Cross multiply
156.31x = 234.71 × 102.55 - Step 4: Simplify right side
156.31x = 24,069.51 - Step 5: Solve for x
x = 24,069.51/156.31 - Step 6: Final answer
x = 153.99
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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.