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Finding the Fourth Proportional to 576.43, 795.05 and 355.48

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Solution

The fourth proportional to 576.43, 795.05 and 355.48 is: 490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.43 : 795.05 = 355.48 : x
  2. Step 2: Convert to fraction form
    576.43/795.05 = 355.48/x
  3. Step 3: Cross multiply
    576.43x = 795.05 × 355.48
  4. Step 4: Simplify right side
    576.43x = 282,620.40
  5. Step 5: Solve for x
    x = 282,620.40/576.43
  6. Step 6: Final answer
    x = 490.30

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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.