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Finding the Fourth Proportional to 322.84, 484.25 and 103.47

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Solution

The fourth proportional to 322.84, 484.25 and 103.47 is: 155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.84 : 484.25 = 103.47 : x
  2. Step 2: Convert to fraction form
    322.84/484.25 = 103.47/x
  3. Step 3: Cross multiply
    322.84x = 484.25 × 103.47
  4. Step 4: Simplify right side
    322.84x = 50,103.90
  5. Step 5: Solve for x
    x = 50,103.90/322.84
  6. Step 6: Final answer
    x = 155.20

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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.