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Finding the Fourth Proportional to 1,630.42, 2,249.97 and 884.38

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Solution

The fourth proportional to 1,630.42, 2,249.97 and 884.38 is: 1,220.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630.42 : 2,249.97 = 884.38 : x
  2. Step 2: Convert to fraction form
    1,630.42/2,249.97 = 884.38/x
  3. Step 3: Cross multiply
    1,630.42x = 2,249.97 × 884.38
  4. Step 4: Simplify right side
    1,630.42x = 1,989,826.26
  5. Step 5: Solve for x
    x = 1,989,826.26/1,630.42
  6. Step 6: Final answer
    x = 1,220.44

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1.5x scale

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.