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Finding the Fourth Proportional to 369.52, 554.42 and 225.34

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Solution

The fourth proportional to 369.52, 554.42 and 225.34 is: 338.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.52 : 554.42 = 225.34 : x
  2. Step 2: Convert to fraction form
    369.52/554.42 = 225.34/x
  3. Step 3: Cross multiply
    369.52x = 554.42 × 225.34
  4. Step 4: Simplify right side
    369.52x = 124,932.18
  5. Step 5: Solve for x
    x = 124,932.18/369.52
  6. Step 6: Final answer
    x = 338.10

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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.