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Finding the Fourth Proportional to 576.60, 794.52 and 445.20

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Solution

The fourth proportional to 576.60, 794.52 and 445.20 is: 613.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.60 : 794.52 = 445.20 : x
  2. Step 2: Convert to fraction form
    576.60/794.52 = 445.20/x
  3. Step 3: Cross multiply
    576.60x = 794.52 × 445.20
  4. Step 4: Simplify right side
    576.60x = 353,720.30
  5. Step 5: Solve for x
    x = 353,720.30/576.60
  6. Step 6: Final answer
    x = 613.46

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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.