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Finding the Fourth Proportional to 578.12, 796.64 and 401.13

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Solution

The fourth proportional to 578.12, 796.64 and 401.13 is: 552.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.12 : 796.64 = 401.13 : x
  2. Step 2: Convert to fraction form
    578.12/796.64 = 401.13/x
  3. Step 3: Cross multiply
    578.12x = 796.64 × 401.13
  4. Step 4: Simplify right side
    578.12x = 319,554.20
  5. Step 5: Solve for x
    x = 319,554.20/578.12
  6. Step 6: Final answer
    x = 552.75

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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.