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Finding the Fourth Proportional to 483.63, 672.03 and 478.62

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Solution

The fourth proportional to 483.63, 672.03 and 478.62 is: 665.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.63 : 672.03 = 478.62 : x
  2. Step 2: Convert to fraction form
    483.63/672.03 = 478.62/x
  3. Step 3: Cross multiply
    483.63x = 672.03 × 478.62
  4. Step 4: Simplify right side
    483.63x = 321,647.00
  5. Step 5: Solve for x
    x = 321,647.00/483.63
  6. Step 6: Final answer
    x = 665.07

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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.