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Finding the Fourth Proportional to 461.90, 637.72 and 351.94

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Solution

The fourth proportional to 461.90, 637.72 and 351.94 is: 485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.90 : 637.72 = 351.94 : x
  2. Step 2: Convert to fraction form
    461.90/637.72 = 351.94/x
  3. Step 3: Cross multiply
    461.90x = 637.72 × 351.94
  4. Step 4: Simplify right side
    461.90x = 224,436.70
  5. Step 5: Solve for x
    x = 224,436.70/461.90
  6. Step 6: Final answer
    x = 485.90

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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.