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Finding the Fourth Proportional to 252.82, 378.62 and 155.36

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Solution

The fourth proportional to 252.82, 378.62 and 155.36 is: 232.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.82 : 378.62 = 155.36 : x
  2. Step 2: Convert to fraction form
    252.82/378.62 = 155.36/x
  3. Step 3: Cross multiply
    252.82x = 378.62 × 155.36
  4. Step 4: Simplify right side
    252.82x = 58,822.40
  5. Step 5: Solve for x
    x = 58,822.40/252.82
  6. Step 6: Final answer
    x = 232.67

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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.