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Finding the Fourth Proportional to 538.36, 743.54 and 480.04

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Solution

The fourth proportional to 538.36, 743.54 and 480.04 is: 662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.36 : 743.54 = 480.04 : x
  2. Step 2: Convert to fraction form
    538.36/743.54 = 480.04/x
  3. Step 3: Cross multiply
    538.36x = 743.54 × 480.04
  4. Step 4: Simplify right side
    538.36x = 356,928.94
  5. Step 5: Solve for x
    x = 356,928.94/538.36
  6. Step 6: Final answer
    x = 662.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.