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Finding the Fourth Proportional to 412.38, 567.90 and 404.28

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Solution

The fourth proportional to 412.38, 567.90 and 404.28 is: 556.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.38 : 567.90 = 404.28 : x
  2. Step 2: Convert to fraction form
    412.38/567.90 = 404.28/x
  3. Step 3: Cross multiply
    412.38x = 567.90 × 404.28
  4. Step 4: Simplify right side
    412.38x = 229,590.61
  5. Step 5: Solve for x
    x = 229,590.61/412.38
  6. Step 6: Final answer
    x = 556.75

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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.