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Finding the Fourth Proportional to 544.60, 815.70 and 483.80

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Solution

The fourth proportional to 544.60, 815.70 and 483.80 is: 724.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.60 : 815.70 = 483.80 : x
  2. Step 2: Convert to fraction form
    544.60/815.70 = 483.80/x
  3. Step 3: Cross multiply
    544.60x = 815.70 × 483.80
  4. Step 4: Simplify right side
    544.60x = 394,635.66
  5. Step 5: Solve for x
    x = 394,635.66/544.60
  6. Step 6: Final answer
    x = 724.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.