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Finding the Fourth Proportional to 1,449.41, 2,174.38 and 462.15

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Solution

The fourth proportional to 1,449.41, 2,174.38 and 462.15 is: 693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.41 : 2,174.38 = 462.15 : x
  2. Step 2: Convert to fraction form
    1,449.41/2,174.38 = 462.15/x
  3. Step 3: Cross multiply
    1,449.41x = 2,174.38 × 462.15
  4. Step 4: Simplify right side
    1,449.41x = 1,004,888.56
  5. Step 5: Solve for x
    x = 1,004,888.56/1,449.41
  6. Step 6: Final answer
    x = 693.31

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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.