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Finding the Fourth Proportional to 540.55, 746.01 and 330.86

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Solution

The fourth proportional to 540.55, 746.01 and 330.86 is: 456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.55 : 746.01 = 330.86 : x
  2. Step 2: Convert to fraction form
    540.55/746.01 = 330.86/x
  3. Step 3: Cross multiply
    540.55x = 746.01 × 330.86
  4. Step 4: Simplify right side
    540.55x = 246,826.21
  5. Step 5: Solve for x
    x = 246,826.21/540.55
  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.