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Finding the Fourth Proportional to 538.84, 743.48 and 342.60

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Solution

The fourth proportional to 538.84, 743.48 and 342.60 is: 472.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.84 : 743.48 = 342.60 : x
  2. Step 2: Convert to fraction form
    538.84/743.48 = 342.60/x
  3. Step 3: Cross multiply
    538.84x = 743.48 × 342.60
  4. Step 4: Simplify right side
    538.84x = 254,716.25
  5. Step 5: Solve for x
    x = 254,716.25/538.84
  6. Step 6: Final answer
    x = 472.71

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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.