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Finding the Fourth Proportional to 670.44, 925.38 and 408.41

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Solution

The fourth proportional to 670.44, 925.38 and 408.41 is: 563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.44 : 925.38 = 408.41 : x
  2. Step 2: Convert to fraction form
    670.44/925.38 = 408.41/x
  3. Step 3: Cross multiply
    670.44x = 925.38 × 408.41
  4. Step 4: Simplify right side
    670.44x = 377,929.82
  5. Step 5: Solve for x
    x = 377,929.82/670.44
  6. Step 6: Final answer
    x = 563.70

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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.