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Finding the Fourth Proportional to 517.35, 713.68 and 351.68

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Solution

The fourth proportional to 517.35, 713.68 and 351.68 is: 485.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.35 : 713.68 = 351.68 : x
  2. Step 2: Convert to fraction form
    517.35/713.68 = 351.68/x
  3. Step 3: Cross multiply
    517.35x = 713.68 × 351.68
  4. Step 4: Simplify right side
    517.35x = 250,982.53
  5. Step 5: Solve for x
    x = 250,982.53/517.35
  6. Step 6: Final answer
    x = 485.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.