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Finding the Fourth Proportional to 1,329.42, 1,994.12 and 633.97

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Solution

The fourth proportional to 1,329.42, 1,994.12 and 633.97 is: 950.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.42 : 1,994.12 = 633.97 : x
  2. Step 2: Convert to fraction form
    1,329.42/1,994.12 = 633.97/x
  3. Step 3: Cross multiply
    1,329.42x = 1,994.12 × 633.97
  4. Step 4: Simplify right side
    1,329.42x = 1,264,212.26
  5. Step 5: Solve for x
    x = 1,264,212.26/1,329.42
  6. Step 6: Final answer
    x = 950.95

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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.