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Finding the Fourth Proportional to 360.38, 540.56 and 155.00

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Solution

The fourth proportional to 360.38, 540.56 and 155.00 is: 232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.38 : 540.56 = 155.00 : x
  2. Step 2: Convert to fraction form
    360.38/540.56 = 155.00/x
  3. Step 3: Cross multiply
    360.38x = 540.56 × 155.00
  4. Step 4: Simplify right side
    360.38x = 83,788.54
  5. Step 5: Solve for x
    x = 83,788.54/360.38
  6. Step 6: Final answer
    x = 232.50

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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.