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Finding the Fourth Proportional to 417.69, 576.36 and 251.97

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Solution

The fourth proportional to 417.69, 576.36 and 251.97 is: 347.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.69 : 576.36 = 251.97 : x
  2. Step 2: Convert to fraction form
    417.69/576.36 = 251.97/x
  3. Step 3: Cross multiply
    417.69x = 576.36 × 251.97
  4. Step 4: Simplify right side
    417.69x = 145,225.43
  5. Step 5: Solve for x
    x = 145,225.43/417.69
  6. Step 6: Final answer
    x = 347.69

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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.