Finding the Fourth Proportional to 156.53, 216.01 and 91.05
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Solution
The fourth proportional to 156.53, 216.01 and 91.05 is: 125.65
Step by Step Solution
- Step 1: Write the proportion equation
156.53 : 216.01 = 91.05 : x - Step 2: Convert to fraction form
156.53/216.01 = 91.05/x - Step 3: Cross multiply
156.53x = 216.01 × 91.05 - Step 4: Simplify right side
156.53x = 19,667.71 - Step 5: Solve for x
x = 19,667.71/156.53 - Step 6: Final answer
x = 125.65
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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.