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Finding the Fourth Proportional to 1,589.20, 2,384.70 and 615.37

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Solution

The fourth proportional to 1,589.20, 2,384.70 and 615.37 is: 923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.20 : 2,384.70 = 615.37 : x
  2. Step 2: Convert to fraction form
    1,589.20/2,384.70 = 615.37/x
  3. Step 3: Cross multiply
    1,589.20x = 2,384.70 × 615.37
  4. Step 4: Simplify right side
    1,589.20x = 1,467,472.84
  5. Step 5: Solve for x
    x = 1,467,472.84/1,589.20
  6. Step 6: Final answer
    x = 923.40

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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.