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Finding the Fourth Proportional to 369.43, 553.98 and 125.98

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Solution

The fourth proportional to 369.43, 553.98 and 125.98 is: 188.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.43 : 553.98 = 125.98 : x
  2. Step 2: Convert to fraction form
    369.43/553.98 = 125.98/x
  3. Step 3: Cross multiply
    369.43x = 553.98 × 125.98
  4. Step 4: Simplify right side
    369.43x = 69,790.40
  5. Step 5: Solve for x
    x = 69,790.40/369.43
  6. Step 6: Final answer
    x = 188.91

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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.