Finding the Fourth Proportional to 156.96, 235.26 and 84.70
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Solution
The fourth proportional to 156.96, 235.26 and 84.70 is: 126.95
Step by Step Solution
- Step 1: Write the proportion equation
156.96 : 235.26 = 84.70 : x - Step 2: Convert to fraction form
156.96/235.26 = 84.70/x - Step 3: Cross multiply
156.96x = 235.26 × 84.70 - Step 4: Simplify right side
156.96x = 19,926.52 - Step 5: Solve for x
x = 19,926.52/156.96 - Step 6: Final answer
x = 126.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.