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Finding the Fourth Proportional to 671.16, 925.88 and 422.36

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Solution

The fourth proportional to 671.16, 925.88 and 422.36 is: 582.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.16 : 925.88 = 422.36 : x
  2. Step 2: Convert to fraction form
    671.16/925.88 = 422.36/x
  3. Step 3: Cross multiply
    671.16x = 925.88 × 422.36
  4. Step 4: Simplify right side
    671.16x = 391,054.68
  5. Step 5: Solve for x
    x = 391,054.68/671.16
  6. Step 6: Final answer
    x = 582.65

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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.