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Finding the Fourth Proportional to 157.47, 236.16 and 92.49

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Solution

The fourth proportional to 157.47, 236.16 and 92.49 is: 138.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.47 : 236.16 = 92.49 : x
  2. Step 2: Convert to fraction form
    157.47/236.16 = 92.49/x
  3. Step 3: Cross multiply
    157.47x = 236.16 × 92.49
  4. Step 4: Simplify right side
    157.47x = 21,842.44
  5. Step 5: Solve for x
    x = 21,842.44/157.47
  6. Step 6: Final answer
    x = 138.71

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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.