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Finding the Fourth Proportional to 540.62, 745.90 and 374.91

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Solution

The fourth proportional to 540.62, 745.90 and 374.91 is: 517.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.62 : 745.90 = 374.91 : x
  2. Step 2: Convert to fraction form
    540.62/745.90 = 374.91/x
  3. Step 3: Cross multiply
    540.62x = 745.90 × 374.91
  4. Step 4: Simplify right side
    540.62x = 279,645.37
  5. Step 5: Solve for x
    x = 279,645.37/540.62
  6. Step 6: Final answer
    x = 517.27

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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.