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Finding the Fourth Proportional to 609.23, 912.26 and 558.48

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Solution

The fourth proportional to 609.23, 912.26 and 558.48 is: 836.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.23 : 912.26 = 558.48 : x
  2. Step 2: Convert to fraction form
    609.23/912.26 = 558.48/x
  3. Step 3: Cross multiply
    609.23x = 912.26 × 558.48
  4. Step 4: Simplify right side
    609.23x = 509,480.36
  5. Step 5: Solve for x
    x = 509,480.36/609.23
  6. Step 6: Final answer
    x = 836.28

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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.