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Finding the Fourth Proportional to 1,119.43, 1,544.81 and 622.06

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Solution

The fourth proportional to 1,119.43, 1,544.81 and 622.06 is: 858.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.43 : 1,544.81 = 622.06 : x
  2. Step 2: Convert to fraction form
    1,119.43/1,544.81 = 622.06/x
  3. Step 3: Cross multiply
    1,119.43x = 1,544.81 × 622.06
  4. Step 4: Simplify right side
    1,119.43x = 960,961.40
  5. Step 5: Solve for x
    x = 960,961.40/1,119.43
  6. Step 6: Final answer
    x = 858.44

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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.