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Finding the Fourth Proportional to 540.81, 745.11 and 374.79

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Solution

The fourth proportional to 540.81, 745.11 and 374.79 is: 516.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.81 : 745.11 = 374.79 : x
  2. Step 2: Convert to fraction form
    540.81/745.11 = 374.79/x
  3. Step 3: Cross multiply
    540.81x = 745.11 × 374.79
  4. Step 4: Simplify right side
    540.81x = 279,259.78
  5. Step 5: Solve for x
    x = 279,259.78/540.81
  6. Step 6: Final answer
    x = 516.37

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1.5x scale

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.