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Finding the Fourth Proportional to 417.57, 576.06 and 251.68

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Solution

The fourth proportional to 417.57, 576.06 and 251.68 is: 347.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.57 : 576.06 = 251.68 : x
  2. Step 2: Convert to fraction form
    417.57/576.06 = 251.68/x
  3. Step 3: Cross multiply
    417.57x = 576.06 × 251.68
  4. Step 4: Simplify right side
    417.57x = 144,982.78
  5. Step 5: Solve for x
    x = 144,982.78/417.57
  6. Step 6: Final answer
    x = 347.21

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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.