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Finding the Fourth Proportional to 515.33, 773.09 and 190.70

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Solution

The fourth proportional to 515.33, 773.09 and 190.70 is: 286.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.33 : 773.09 = 190.70 : x
  2. Step 2: Convert to fraction form
    515.33/773.09 = 190.70/x
  3. Step 3: Cross multiply
    515.33x = 773.09 × 190.70
  4. Step 4: Simplify right side
    515.33x = 147,423.44
  5. Step 5: Solve for x
    x = 147,423.44/515.33
  6. Step 6: Final answer
    x = 286.08

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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.