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Finding the Fourth Proportional to 608.87, 911.07 and 403.13

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Solution

The fourth proportional to 608.87, 911.07 and 403.13 is: 603.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.87 : 911.07 = 403.13 : x
  2. Step 2: Convert to fraction form
    608.87/911.07 = 403.13/x
  3. Step 3: Cross multiply
    608.87x = 911.07 × 403.13
  4. Step 4: Simplify right side
    608.87x = 367,275.09
  5. Step 5: Solve for x
    x = 367,275.09/608.87
  6. Step 6: Final answer
    x = 603.21

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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.