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Finding the Fourth Proportional to 1,717.28, 2,576.06 and 547.44

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Solution

The fourth proportional to 1,717.28, 2,576.06 and 547.44 is: 821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.28 : 2,576.06 = 547.44 : x
  2. Step 2: Convert to fraction form
    1,717.28/2,576.06 = 547.44/x
  3. Step 3: Cross multiply
    1,717.28x = 2,576.06 × 547.44
  4. Step 4: Simplify right side
    1,717.28x = 1,410,247.51
  5. Step 5: Solve for x
    x = 1,410,247.51/1,717.28
  6. Step 6: Final answer
    x = 821.21

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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.