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Finding the Fourth Proportional to 2,223.16, 3,335.82 and 925

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Solution

The fourth proportional to 2,223.16, 3,335.82 and 925 is: 1,387.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.16 : 3,335.82 = 925 : x
  2. Step 2: Convert to fraction form
    2,223.16/3,335.82 = 925/x
  3. Step 3: Cross multiply
    2,223.16x = 3,335.82 × 925
  4. Step 4: Simplify right side
    2,223.16x = 3,085,633.50
  5. Step 5: Solve for x
    x = 3,085,633.50/2,223.16
  6. Step 6: Final answer
    x = 1,387.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.