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Finding the Fourth Proportional to 515.70, 773.15 and 352.89

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Solution

The fourth proportional to 515.70, 773.15 and 352.89 is: 529.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.70 : 773.15 = 352.89 : x
  2. Step 2: Convert to fraction form
    515.70/773.15 = 352.89/x
  3. Step 3: Cross multiply
    515.70x = 773.15 × 352.89
  4. Step 4: Simplify right side
    515.70x = 272,835.14
  5. Step 5: Solve for x
    x = 272,835.14/515.70
  6. Step 6: Final answer
    x = 529.06

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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.