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Finding the Fourth Proportional to 1,404.29, 2,106.44 and 633.89

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Solution

The fourth proportional to 1,404.29, 2,106.44 and 633.89 is: 950.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404.29 : 2,106.44 = 633.89 : x
  2. Step 2: Convert to fraction form
    1,404.29/2,106.44 = 633.89/x
  3. Step 3: Cross multiply
    1,404.29x = 2,106.44 × 633.89
  4. Step 4: Simplify right side
    1,404.29x = 1,335,251.25
  5. Step 5: Solve for x
    x = 1,335,251.25/1,404.29
  6. Step 6: Final answer
    x = 950.84

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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.