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Finding the Fourth Proportional to 540.95, 745.58 and 447.39

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Solution

The fourth proportional to 540.95, 745.58 and 447.39 is: 616.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.95 : 745.58 = 447.39 : x
  2. Step 2: Convert to fraction form
    540.95/745.58 = 447.39/x
  3. Step 3: Cross multiply
    540.95x = 745.58 × 447.39
  4. Step 4: Simplify right side
    540.95x = 333,562.80
  5. Step 5: Solve for x
    x = 333,562.80/540.95
  6. Step 6: Final answer
    x = 616.63

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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.