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Finding the Fourth Proportional to 540.67, 745.88 and 330.82

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Solution

The fourth proportional to 540.67, 745.88 and 330.82 is: 456.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.67 : 745.88 = 330.82 : x
  2. Step 2: Convert to fraction form
    540.67/745.88 = 330.82/x
  3. Step 3: Cross multiply
    540.67x = 745.88 × 330.82
  4. Step 4: Simplify right side
    540.67x = 246,752.02
  5. Step 5: Solve for x
    x = 246,752.02/540.67
  6. Step 6: Final answer
    x = 456.38

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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.