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Finding the Fourth Proportional to 1,586.94, 2,379.63 and 662.23

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Solution

The fourth proportional to 1,586.94, 2,379.63 and 662.23 is: 993.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.94 : 2,379.63 = 662.23 : x
  2. Step 2: Convert to fraction form
    1,586.94/2,379.63 = 662.23/x
  3. Step 3: Cross multiply
    1,586.94x = 2,379.63 × 662.23
  4. Step 4: Simplify right side
    1,586.94x = 1,575,850.72
  5. Step 5: Solve for x
    x = 1,575,850.72/1,586.94
  6. Step 6: Final answer
    x = 993.01

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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.