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Finding the Fourth Proportional to 515.85, 774.20 and 483.41

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Solution

The fourth proportional to 515.85, 774.20 and 483.41 is: 725.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.85 : 774.20 = 483.41 : x
  2. Step 2: Convert to fraction form
    515.85/774.20 = 483.41/x
  3. Step 3: Cross multiply
    515.85x = 774.20 × 483.41
  4. Step 4: Simplify right side
    515.85x = 374,256.02
  5. Step 5: Solve for x
    x = 374,256.02/515.85
  6. Step 6: Final answer
    x = 725.52

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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.