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Finding the Fourth Proportional to 369.94, 554.57 and 126.30

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Solution

The fourth proportional to 369.94, 554.57 and 126.30 is: 189.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.94 : 554.57 = 126.30 : x
  2. Step 2: Convert to fraction form
    369.94/554.57 = 126.30/x
  3. Step 3: Cross multiply
    369.94x = 554.57 × 126.30
  4. Step 4: Simplify right side
    369.94x = 70,039.42
  5. Step 5: Solve for x
    x = 70,039.42/369.94
  6. Step 6: Final answer
    x = 189.33

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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.