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Finding the Fourth Proportional to 1,353.97, 2,031.02 and 488.28

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Solution

The fourth proportional to 1,353.97, 2,031.02 and 488.28 is: 732.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.97 : 2,031.02 = 488.28 : x
  2. Step 2: Convert to fraction form
    1,353.97/2,031.02 = 488.28/x
  3. Step 3: Cross multiply
    1,353.97x = 2,031.02 × 488.28
  4. Step 4: Simplify right side
    1,353.97x = 991,706.45
  5. Step 5: Solve for x
    x = 991,706.45/1,353.97
  6. Step 6: Final answer
    x = 732.44

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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.