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Finding the Fourth Proportional to 360, 540.36 and 262.80

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Solution

The fourth proportional to 360, 540.36 and 262.80 is: 394.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    360 : 540.36 = 262.80 : x
  2. Step 2: Convert to fraction form
    360/540.36 = 262.80/x
  3. Step 3: Cross multiply
    360x = 540.36 × 262.80
  4. Step 4: Simplify right side
    360x = 142,006.61
  5. Step 5: Solve for x
    x = 142,006.61/360
  6. Step 6: Final answer
    x = 394.46

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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.