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Finding the Fourth Proportional to 1,626.68, 2,439.83 and 472.43

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Solution

The fourth proportional to 1,626.68, 2,439.83 and 472.43 is: 708.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626.68 : 2,439.83 = 472.43 : x
  2. Step 2: Convert to fraction form
    1,626.68/2,439.83 = 472.43/x
  3. Step 3: Cross multiply
    1,626.68x = 2,439.83 × 472.43
  4. Step 4: Simplify right side
    1,626.68x = 1,152,637.87
  5. Step 5: Solve for x
    x = 1,152,637.87/1,626.68
  6. Step 6: Final answer
    x = 708.59

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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.