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Finding the Fourth Proportional to 538.13, 742.37 and 351.54

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Solution

The fourth proportional to 538.13, 742.37 and 351.54 is: 484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.13 : 742.37 = 351.54 : x
  2. Step 2: Convert to fraction form
    538.13/742.37 = 351.54/x
  3. Step 3: Cross multiply
    538.13x = 742.37 × 351.54
  4. Step 4: Simplify right side
    538.13x = 260,970.99
  5. Step 5: Solve for x
    x = 260,970.99/538.13
  6. Step 6: Final answer
    x = 484.96

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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.