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Finding the Fourth Proportional to 486.44, 733.64 and 477.80

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Solution

The fourth proportional to 486.44, 733.64 and 477.80 is: 720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.44 : 733.64 = 477.80 : x
  2. Step 2: Convert to fraction form
    486.44/733.64 = 477.80/x
  3. Step 3: Cross multiply
    486.44x = 733.64 × 477.80
  4. Step 4: Simplify right side
    486.44x = 350,527.13
  5. Step 5: Solve for x
    x = 350,527.13/486.44
  6. Step 6: Final answer
    x = 720.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.