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Finding the Fourth Proportional to 322.03, 483.08 and 139.24

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Solution

The fourth proportional to 322.03, 483.08 and 139.24 is: 208.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.03 : 483.08 = 139.24 : x
  2. Step 2: Convert to fraction form
    322.03/483.08 = 139.24/x
  3. Step 3: Cross multiply
    322.03x = 483.08 × 139.24
  4. Step 4: Simplify right side
    322.03x = 67,264.06
  5. Step 5: Solve for x
    x = 67,264.06/322.03
  6. Step 6: Final answer
    x = 208.88

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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.