Home / 1,282.20-1,923.68-633.40

Finding the Fourth Proportional to 1,282.20, 1,923.68 and 633.40

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Solution

The fourth proportional to 1,282.20, 1,923.68 and 633.40 is: 950.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.20 : 1,923.68 = 633.40 : x
  2. Step 2: Convert to fraction form
    1,282.20/1,923.68 = 633.40/x
  3. Step 3: Cross multiply
    1,282.20x = 1,923.68 × 633.40
  4. Step 4: Simplify right side
    1,282.20x = 1,218,458.91
  5. Step 5: Solve for x
    x = 1,218,458.91/1,282.20
  6. Step 6: Final answer
    x = 950.29

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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.