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Finding the Fourth Proportional to 360.50, 539.73 and 238.39

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Solution

The fourth proportional to 360.50, 539.73 and 238.39 is: 356.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.50 : 539.73 = 238.39 : x
  2. Step 2: Convert to fraction form
    360.50/539.73 = 238.39/x
  3. Step 3: Cross multiply
    360.50x = 539.73 × 238.39
  4. Step 4: Simplify right side
    360.50x = 128,664.89
  5. Step 5: Solve for x
    x = 128,664.89/360.50
  6. Step 6: Final answer
    x = 356.91

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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.