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Finding the Fourth Proportional to 1,717.34, 2,576 and 484.60

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Solution

The fourth proportional to 1,717.34, 2,576 and 484.60 is: 726.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.34 : 2,576 = 484.60 : x
  2. Step 2: Convert to fraction form
    1,717.34/2,576 = 484.60/x
  3. Step 3: Cross multiply
    1,717.34x = 2,576 × 484.60
  4. Step 4: Simplify right side
    1,717.34x = 1,248,329.60
  5. Step 5: Solve for x
    x = 1,248,329.60/1,717.34
  6. Step 6: Final answer
    x = 726.90

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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.