Finding the Fourth Proportional to 93.68, 129.36 and 62.68
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Solution
The fourth proportional to 93.68, 129.36 and 62.68 is: 86.55
Step by Step Solution
- Step 1: Write the proportion equation
93.68 : 129.36 = 62.68 : x - Step 2: Convert to fraction form
93.68/129.36 = 62.68/x - Step 3: Cross multiply
93.68x = 129.36 × 62.68 - Step 4: Simplify right side
93.68x = 8,108.28 - Step 5: Solve for x
x = 8,108.28/93.68 - Step 6: Final answer
x = 86.55
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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.