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Finding the Fourth Proportional to 539.99, 745.53 and 374.14

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Solution

The fourth proportional to 539.99, 745.53 and 374.14 is: 516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.99 : 745.53 = 374.14 : x
  2. Step 2: Convert to fraction form
    539.99/745.53 = 374.14/x
  3. Step 3: Cross multiply
    539.99x = 745.53 × 374.14
  4. Step 4: Simplify right side
    539.99x = 278,932.59
  5. Step 5: Solve for x
    x = 278,932.59/539.99
  6. Step 6: Final answer
    x = 516.55

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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.