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Finding the Fourth Proportional to 1,589.75, 2,384.63 and 677.75

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Solution

The fourth proportional to 1,589.75, 2,384.63 and 677.75 is: 1,016.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.75 : 2,384.63 = 677.75 : x
  2. Step 2: Convert to fraction form
    1,589.75/2,384.63 = 677.75/x
  3. Step 3: Cross multiply
    1,589.75x = 2,384.63 × 677.75
  4. Step 4: Simplify right side
    1,589.75x = 1,616,182.98
  5. Step 5: Solve for x
    x = 1,616,182.98/1,589.75
  6. Step 6: Final answer
    x = 1,016.63

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1.5x scale

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.