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Finding the Fourth Proportional to 377.63, 521.13 and 211.83

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Solution

The fourth proportional to 377.63, 521.13 and 211.83 is: 292.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.63 : 521.13 = 211.83 : x
  2. Step 2: Convert to fraction form
    377.63/521.13 = 211.83/x
  3. Step 3: Cross multiply
    377.63x = 521.13 × 211.83
  4. Step 4: Simplify right side
    377.63x = 110,390.97
  5. Step 5: Solve for x
    x = 110,390.97/377.63
  6. Step 6: Final answer
    x = 292.33

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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.