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Finding the Fourth Proportional to 608.68, 913.83 and 517.96

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Solution

The fourth proportional to 608.68, 913.83 and 517.96 is: 777.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.68 : 913.83 = 517.96 : x
  2. Step 2: Convert to fraction form
    608.68/913.83 = 517.96/x
  3. Step 3: Cross multiply
    608.68x = 913.83 × 517.96
  4. Step 4: Simplify right side
    608.68x = 473,327.39
  5. Step 5: Solve for x
    x = 473,327.39/608.68
  6. Step 6: Final answer
    x = 777.63

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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.