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Finding the Fourth Proportional to 540.61, 746.05 and 330.88

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Solution

The fourth proportional to 540.61, 746.05 and 330.88 is: 456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.61 : 746.05 = 330.88 : x
  2. Step 2: Convert to fraction form
    540.61/746.05 = 330.88/x
  3. Step 3: Cross multiply
    540.61x = 746.05 × 330.88
  4. Step 4: Simplify right side
    540.61x = 246,850.12
  5. Step 5: Solve for x
    x = 246,850.12/540.61
  6. Step 6: Final answer
    x = 456.62

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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.