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Finding the Fourth Proportional to 1,586.70, 2,380.20 and 662.24

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Solution

The fourth proportional to 1,586.70, 2,380.20 and 662.24 is: 993.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.70 : 2,380.20 = 662.24 : x
  2. Step 2: Convert to fraction form
    1,586.70/2,380.20 = 662.24/x
  3. Step 3: Cross multiply
    1,586.70x = 2,380.20 × 662.24
  4. Step 4: Simplify right side
    1,586.70x = 1,576,251.75
  5. Step 5: Solve for x
    x = 1,576,251.75/1,586.70
  6. Step 6: Final answer
    x = 993.42

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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.