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Finding the Fourth Proportional to 605.45, 911.91 and 576.29

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Solution

The fourth proportional to 605.45, 911.91 and 576.29 is: 867.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.45 : 911.91 = 576.29 : x
  2. Step 2: Convert to fraction form
    605.45/911.91 = 576.29/x
  3. Step 3: Cross multiply
    605.45x = 911.91 × 576.29
  4. Step 4: Simplify right side
    605.45x = 525,526.90
  5. Step 5: Solve for x
    x = 525,526.90/605.45
  6. Step 6: Final answer
    x = 867.99

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.