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Finding the Fourth Proportional to 515.10, 771.84 and 350.28

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Solution

The fourth proportional to 515.10, 771.84 and 350.28 is: 524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.10 : 771.84 = 350.28 : x
  2. Step 2: Convert to fraction form
    515.10/771.84 = 350.28/x
  3. Step 3: Cross multiply
    515.10x = 771.84 × 350.28
  4. Step 4: Simplify right side
    515.10x = 270,360.12
  5. Step 5: Solve for x
    x = 270,360.12/515.10
  6. Step 6: Final answer
    x = 524.87

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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.