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Finding the Fourth Proportional to 225.40, 337.95 and 103.84

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Solution

The fourth proportional to 225.40, 337.95 and 103.84 is: 155.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.40 : 337.95 = 103.84 : x
  2. Step 2: Convert to fraction form
    225.40/337.95 = 103.84/x
  3. Step 3: Cross multiply
    225.40x = 337.95 × 103.84
  4. Step 4: Simplify right side
    225.40x = 35,092.73
  5. Step 5: Solve for x
    x = 35,092.73/225.40
  6. Step 6: Final answer
    x = 155.69

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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.