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Finding the Fourth Proportional to 417.45, 576.03 and 230.92

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Solution

The fourth proportional to 417.45, 576.03 and 230.92 is: 318.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.45 : 576.03 = 230.92 : x
  2. Step 2: Convert to fraction form
    417.45/576.03 = 230.92/x
  3. Step 3: Cross multiply
    417.45x = 576.03 × 230.92
  4. Step 4: Simplify right side
    417.45x = 133,016.85
  5. Step 5: Solve for x
    x = 133,016.85/417.45
  6. Step 6: Final answer
    x = 318.64

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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.