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Finding the Fourth Proportional to 576.02, 793.18 and 389.44

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Solution

The fourth proportional to 576.02, 793.18 and 389.44 is: 536.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.02 : 793.18 = 389.44 : x
  2. Step 2: Convert to fraction form
    576.02/793.18 = 389.44/x
  3. Step 3: Cross multiply
    576.02x = 793.18 × 389.44
  4. Step 4: Simplify right side
    576.02x = 308,896.02
  5. Step 5: Solve for x
    x = 308,896.02/576.02
  6. Step 6: Final answer
    x = 536.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.