Home / 1,438.30-2,157.48-464.44

Finding the Fourth Proportional to 1,438.30, 2,157.48 and 464.44

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Solution

The fourth proportional to 1,438.30, 2,157.48 and 464.44 is: 696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.30 : 2,157.48 = 464.44 : x
  2. Step 2: Convert to fraction form
    1,438.30/2,157.48 = 464.44/x
  3. Step 3: Cross multiply
    1,438.30x = 2,157.48 × 464.44
  4. Step 4: Simplify right side
    1,438.30x = 1,002,020.01
  5. Step 5: Solve for x
    x = 1,002,020.01/1,438.30
  6. Step 6: Final answer
    x = 696.67

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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.