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Finding the Fourth Proportional to 608.91, 913.50 and 487.41

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Solution

The fourth proportional to 608.91, 913.50 and 487.41 is: 731.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.91 : 913.50 = 487.41 : x
  2. Step 2: Convert to fraction form
    608.91/913.50 = 487.41/x
  3. Step 3: Cross multiply
    608.91x = 913.50 × 487.41
  4. Step 4: Simplify right side
    608.91x = 445,249.04
  5. Step 5: Solve for x
    x = 445,249.04/608.91
  6. Step 6: Final answer
    x = 731.22

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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.