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Finding the Fourth Proportional to 484.07, 667.51 and 287.54

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Solution

The fourth proportional to 484.07, 667.51 and 287.54 is: 396.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.07 : 667.51 = 287.54 : x
  2. Step 2: Convert to fraction form
    484.07/667.51 = 287.54/x
  3. Step 3: Cross multiply
    484.07x = 667.51 × 287.54
  4. Step 4: Simplify right side
    484.07x = 191,934.39
  5. Step 5: Solve for x
    x = 191,934.39/484.07
  6. Step 6: Final answer
    x = 396.51

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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.