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Finding the Fourth Proportional to 155.63, 234.36 and 115.33

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Solution

The fourth proportional to 155.63, 234.36 and 115.33 is: 173.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.63 : 234.36 = 115.33 : x
  2. Step 2: Convert to fraction form
    155.63/234.36 = 115.33/x
  3. Step 3: Cross multiply
    155.63x = 234.36 × 115.33
  4. Step 4: Simplify right side
    155.63x = 27,028.74
  5. Step 5: Solve for x
    x = 27,028.74/155.63
  6. Step 6: Final answer
    x = 173.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.