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Finding the Fourth Proportional to 538.12, 742.26 and 372.52

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Solution

The fourth proportional to 538.12, 742.26 and 372.52 is: 513.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.12 : 742.26 = 372.52 : x
  2. Step 2: Convert to fraction form
    538.12/742.26 = 372.52/x
  3. Step 3: Cross multiply
    538.12x = 742.26 × 372.52
  4. Step 4: Simplify right side
    538.12x = 276,506.70
  5. Step 5: Solve for x
    x = 276,506.70/538.12
  6. Step 6: Final answer
    x = 513.84

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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.