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Finding the Fourth Proportional to 462.17, 637.97 and 287.48

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Solution

The fourth proportional to 462.17, 637.97 and 287.48 is: 396.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.17 : 637.97 = 287.48 : x
  2. Step 2: Convert to fraction form
    462.17/637.97 = 287.48/x
  3. Step 3: Cross multiply
    462.17x = 637.97 × 287.48
  4. Step 4: Simplify right side
    462.17x = 183,407.66
  5. Step 5: Solve for x
    x = 183,407.66/462.17
  6. Step 6: Final answer
    x = 396.84

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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.