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Finding the Fourth Proportional to 468.44, 646.50 and 281.84

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Solution

The fourth proportional to 468.44, 646.50 and 281.84 is: 388.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.44 : 646.50 = 281.84 : x
  2. Step 2: Convert to fraction form
    468.44/646.50 = 281.84/x
  3. Step 3: Cross multiply
    468.44x = 646.50 × 281.84
  4. Step 4: Simplify right side
    468.44x = 182,206.33
  5. Step 5: Solve for x
    x = 182,206.33/468.44
  6. Step 6: Final answer
    x = 388.97

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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.