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Finding the Fourth Proportional to 1,449.43, 2,174.28 and 525.22

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Solution

The fourth proportional to 1,449.43, 2,174.28 and 525.22 is: 787.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.43 : 2,174.28 = 525.22 : x
  2. Step 2: Convert to fraction form
    1,449.43/2,174.28 = 525.22/x
  3. Step 3: Cross multiply
    1,449.43x = 2,174.28 × 525.22
  4. Step 4: Simplify right side
    1,449.43x = 1,141,961.84
  5. Step 5: Solve for x
    x = 1,141,961.84/1,449.43
  6. Step 6: Final answer
    x = 787.87

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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.