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Finding the Fourth Proportional to 379.54, 569.40 and 225.33

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Solution

The fourth proportional to 379.54, 569.40 and 225.33 is: 338.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.54 : 569.40 = 225.33 : x
  2. Step 2: Convert to fraction form
    379.54/569.40 = 225.33/x
  3. Step 3: Cross multiply
    379.54x = 569.40 × 225.33
  4. Step 4: Simplify right side
    379.54x = 128,302.90
  5. Step 5: Solve for x
    x = 128,302.90/379.54
  6. Step 6: Final answer
    x = 338.05

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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.