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Finding the Fourth Proportional to 496.36, 743.58 and 280.36

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Solution

The fourth proportional to 496.36, 743.58 and 280.36 is: 420.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.36 : 743.58 = 280.36 : x
  2. Step 2: Convert to fraction form
    496.36/743.58 = 280.36/x
  3. Step 3: Cross multiply
    496.36x = 743.58 × 280.36
  4. Step 4: Simplify right side
    496.36x = 208,470.09
  5. Step 5: Solve for x
    x = 208,470.09/496.36
  6. Step 6: Final answer
    x = 420.00

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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.