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Finding the Fourth Proportional to 1,481.72, 2,222.84 and 616.64

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Solution

The fourth proportional to 1,481.72, 2,222.84 and 616.64 is: 925.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.72 : 2,222.84 = 616.64 : x
  2. Step 2: Convert to fraction form
    1,481.72/2,222.84 = 616.64/x
  3. Step 3: Cross multiply
    1,481.72x = 2,222.84 × 616.64
  4. Step 4: Simplify right side
    1,481.72x = 1,370,692.06
  5. Step 5: Solve for x
    x = 1,370,692.06/1,481.72
  6. Step 6: Final answer
    x = 925.07

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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.