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Finding the Fourth Proportional to 608.58, 908.69 and 517.19

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Solution

The fourth proportional to 608.58, 908.69 and 517.19 is: 772.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.58 : 908.69 = 517.19 : x
  2. Step 2: Convert to fraction form
    608.58/908.69 = 517.19/x
  3. Step 3: Cross multiply
    608.58x = 908.69 × 517.19
  4. Step 4: Simplify right side
    608.58x = 469,958.25
  5. Step 5: Solve for x
    x = 469,958.25/608.58
  6. Step 6: Final answer
    x = 772.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.