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Finding the Fourth Proportional to 484.68, 671.59 and 478.44

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Solution

The fourth proportional to 484.68, 671.59 and 478.44 is: 662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.68 : 671.59 = 478.44 : x
  2. Step 2: Convert to fraction form
    484.68/671.59 = 478.44/x
  3. Step 3: Cross multiply
    484.68x = 671.59 × 478.44
  4. Step 4: Simplify right side
    484.68x = 321,315.52
  5. Step 5: Solve for x
    x = 321,315.52/484.68
  6. Step 6: Final answer
    x = 662.94

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.