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Finding the Fourth Proportional to 225.23, 337.95 and 127.80

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Solution

The fourth proportional to 225.23, 337.95 and 127.80 is: 191.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.23 : 337.95 = 127.80 : x
  2. Step 2: Convert to fraction form
    225.23/337.95 = 127.80/x
  3. Step 3: Cross multiply
    225.23x = 337.95 × 127.80
  4. Step 4: Simplify right side
    225.23x = 43,190.01
  5. Step 5: Solve for x
    x = 43,190.01/225.23
  6. Step 6: Final answer
    x = 191.76

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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.