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Finding the Fourth Proportional to 538.63, 743.05 and 352.18

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Solution

The fourth proportional to 538.63, 743.05 and 352.18 is: 485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.63 : 743.05 = 352.18 : x
  2. Step 2: Convert to fraction form
    538.63/743.05 = 352.18/x
  3. Step 3: Cross multiply
    538.63x = 743.05 × 352.18
  4. Step 4: Simplify right side
    538.63x = 261,687.35
  5. Step 5: Solve for x
    x = 261,687.35/538.63
  6. Step 6: Final answer
    x = 485.84

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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.