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Finding the Fourth Proportional to 468.35, 646.04 and 281.73

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Solution

The fourth proportional to 468.35, 646.04 and 281.73 is: 388.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.35 : 646.04 = 281.73 : x
  2. Step 2: Convert to fraction form
    468.35/646.04 = 281.73/x
  3. Step 3: Cross multiply
    468.35x = 646.04 × 281.73
  4. Step 4: Simplify right side
    468.35x = 182,008.34
  5. Step 5: Solve for x
    x = 182,008.34/468.35
  6. Step 6: Final answer
    x = 388.62

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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.