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Finding the Fourth Proportional to 371.74, 556.23 and 225.55

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Solution

The fourth proportional to 371.74, 556.23 and 225.55 is: 337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.74 : 556.23 = 225.55 : x
  2. Step 2: Convert to fraction form
    371.74/556.23 = 225.55/x
  3. Step 3: Cross multiply
    371.74x = 556.23 × 225.55
  4. Step 4: Simplify right side
    371.74x = 125,457.68
  5. Step 5: Solve for x
    x = 125,457.68/371.74
  6. Step 6: Final answer
    x = 337.49

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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.