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Finding the Fourth Proportional to 608.49, 911.12 and 475.39

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Solution

The fourth proportional to 608.49, 911.12 and 475.39 is: 711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.49 : 911.12 = 475.39 : x
  2. Step 2: Convert to fraction form
    608.49/911.12 = 475.39/x
  3. Step 3: Cross multiply
    608.49x = 911.12 × 475.39
  4. Step 4: Simplify right side
    608.49x = 433,134.96
  5. Step 5: Solve for x
    x = 433,134.96/608.49
  6. Step 6: Final answer
    x = 711.82

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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.