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Finding the Fourth Proportional to 461.94, 637.79 and 355.41

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Solution

The fourth proportional to 461.94, 637.79 and 355.41 is: 490.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.94 : 637.79 = 355.41 : x
  2. Step 2: Convert to fraction form
    461.94/637.79 = 355.41/x
  3. Step 3: Cross multiply
    461.94x = 637.79 × 355.41
  4. Step 4: Simplify right side
    461.94x = 226,675.17
  5. Step 5: Solve for x
    x = 226,675.17/461.94
  6. Step 6: Final answer
    x = 490.70

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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.