Finding the Fourth Proportional to 147.70, 203.14 and 129.29
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Solution
The fourth proportional to 147.70, 203.14 and 129.29 is: 177.82
Step by Step Solution
- Step 1: Write the proportion equation
147.70 : 203.14 = 129.29 : x - Step 2: Convert to fraction form
147.70/203.14 = 129.29/x - Step 3: Cross multiply
147.70x = 203.14 × 129.29 - Step 4: Simplify right side
147.70x = 26,263.97 - Step 5: Solve for x
x = 26,263.97/147.70 - Step 6: Final answer
x = 177.82
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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.