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Finding the Fourth Proportional to 348.63, 481.11 and 210.63

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Solution

The fourth proportional to 348.63, 481.11 and 210.63 is: 290.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.63 : 481.11 = 210.63 : x
  2. Step 2: Convert to fraction form
    348.63/481.11 = 210.63/x
  3. Step 3: Cross multiply
    348.63x = 481.11 × 210.63
  4. Step 4: Simplify right side
    348.63x = 101,336.20
  5. Step 5: Solve for x
    x = 101,336.20/348.63
  6. Step 6: Final answer
    x = 290.67

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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.