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Finding the Fourth Proportional to 1,758.15, 2,638.32 and 662.37

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Solution

The fourth proportional to 1,758.15, 2,638.32 and 662.37 is: 993.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.15 : 2,638.32 = 662.37 : x
  2. Step 2: Convert to fraction form
    1,758.15/2,638.32 = 662.37/x
  3. Step 3: Cross multiply
    1,758.15x = 2,638.32 × 662.37
  4. Step 4: Simplify right side
    1,758.15x = 1,747,544.02
  5. Step 5: Solve for x
    x = 1,747,544.02/1,758.15
  6. Step 6: Final answer
    x = 993.97

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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.