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Finding the Fourth Proportional to 576.56, 863.76 and 448.04

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Solution

The fourth proportional to 576.56, 863.76 and 448.04 is: 671.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.56 : 863.76 = 448.04 : x
  2. Step 2: Convert to fraction form
    576.56/863.76 = 448.04/x
  3. Step 3: Cross multiply
    576.56x = 863.76 × 448.04
  4. Step 4: Simplify right side
    576.56x = 386,999.03
  5. Step 5: Solve for x
    x = 386,999.03/576.56
  6. Step 6: Final answer
    x = 671.22

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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.