Finding the Fourth Proportional to 135.99, 204.17 and 71.91
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Solution
The fourth proportional to 135.99, 204.17 and 71.91 is: 107.96
Step by Step Solution
- Step 1: Write the proportion equation
135.99 : 204.17 = 71.91 : x - Step 2: Convert to fraction form
135.99/204.17 = 71.91/x - Step 3: Cross multiply
135.99x = 204.17 × 71.91 - Step 4: Simplify right side
135.99x = 14,681.51 - Step 5: Solve for x
x = 14,681.51/135.99 - Step 6: Final answer
x = 107.96
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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.