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Finding the Fourth Proportional to 461.98, 637.23 and 331.06

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Solution

The fourth proportional to 461.98, 637.23 and 331.06 is: 456.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.98 : 637.23 = 331.06 : x
  2. Step 2: Convert to fraction form
    461.98/637.23 = 331.06/x
  3. Step 3: Cross multiply
    461.98x = 637.23 × 331.06
  4. Step 4: Simplify right side
    461.98x = 210,961.36
  5. Step 5: Solve for x
    x = 210,961.36/461.98
  6. Step 6: Final answer
    x = 456.65

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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.