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Finding the Fourth Proportional to 157.84, 217.83 and 92.38

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Solution

The fourth proportional to 157.84, 217.83 and 92.38 is: 127.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.84 : 217.83 = 92.38 : x
  2. Step 2: Convert to fraction form
    157.84/217.83 = 92.38/x
  3. Step 3: Cross multiply
    157.84x = 217.83 × 92.38
  4. Step 4: Simplify right side
    157.84x = 20,123.14
  5. Step 5: Solve for x
    x = 20,123.14/157.84
  6. Step 6: Final answer
    x = 127.49

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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.