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Finding the Fourth Proportional to 538.24, 743.52 and 518.26

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Solution

The fourth proportional to 538.24, 743.52 and 518.26 is: 715.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.24 : 743.52 = 518.26 : x
  2. Step 2: Convert to fraction form
    538.24/743.52 = 518.26/x
  3. Step 3: Cross multiply
    538.24x = 743.52 × 518.26
  4. Step 4: Simplify right side
    538.24x = 385,336.68
  5. Step 5: Solve for x
    x = 385,336.68/538.24
  6. Step 6: Final answer
    x = 715.92

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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.