Finding the Fourth Proportional to 135.12, 202.75 and 58.08
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Solution
The fourth proportional to 135.12, 202.75 and 58.08 is: 87.15
Step by Step Solution
- Step 1: Write the proportion equation
135.12 : 202.75 = 58.08 : x - Step 2: Convert to fraction form
135.12/202.75 = 58.08/x - Step 3: Cross multiply
135.12x = 202.75 × 58.08 - Step 4: Simplify right side
135.12x = 11,774.71 - Step 5: Solve for x
x = 11,774.71/135.12 - Step 6: Final answer
x = 87.15
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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.