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Finding the Fourth Proportional to 1,329.02, 1,829.61 and 996.89

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Solution

The fourth proportional to 1,329.02, 1,829.61 and 996.89 is: 1,372.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.02 : 1,829.61 = 996.89 : x
  2. Step 2: Convert to fraction form
    1,329.02/1,829.61 = 996.89/x
  3. Step 3: Cross multiply
    1,329.02x = 1,829.61 × 996.89
  4. Step 4: Simplify right side
    1,329.02x = 1,823,919.91
  5. Step 5: Solve for x
    x = 1,823,919.91/1,329.02
  6. Step 6: Final answer
    x = 1,372.38

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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.