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Finding the Fourth Proportional to 461.67, 637.17 and 287.07

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Solution

The fourth proportional to 461.67, 637.17 and 287.07 is: 396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.67 : 637.17 = 287.07 : x
  2. Step 2: Convert to fraction form
    461.67/637.17 = 287.07/x
  3. Step 3: Cross multiply
    461.67x = 637.17 × 287.07
  4. Step 4: Simplify right side
    461.67x = 182,912.39
  5. Step 5: Solve for x
    x = 182,912.39/461.67
  6. Step 6: Final answer
    x = 396.20

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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.