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Finding the Fourth Proportional to 576.69, 795.21 and 408.81

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Solution

The fourth proportional to 576.69, 795.21 and 408.81 is: 563.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.69 : 795.21 = 408.81 : x
  2. Step 2: Convert to fraction form
    576.69/795.21 = 408.81/x
  3. Step 3: Cross multiply
    576.69x = 795.21 × 408.81
  4. Step 4: Simplify right side
    576.69x = 325,089.80
  5. Step 5: Solve for x
    x = 325,089.80/576.69
  6. Step 6: Final answer
    x = 563.72

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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.