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Finding the Fourth Proportional to 1,197.38, 1,650.16 and 843.36

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Solution

The fourth proportional to 1,197.38, 1,650.16 and 843.36 is: 1,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.38 : 1,650.16 = 843.36 : x
  2. Step 2: Convert to fraction form
    1,197.38/1,650.16 = 843.36/x
  3. Step 3: Cross multiply
    1,197.38x = 1,650.16 × 843.36
  4. Step 4: Simplify right side
    1,197.38x = 1,391,681.90
  5. Step 5: Solve for x
    x = 1,391,681.90/1,197.38
  6. Step 6: Final answer
    x = 1,162.27

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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.