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Finding the Fourth Proportional to 553.28, 830.28 and 228.92

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Solution

The fourth proportional to 553.28, 830.28 and 228.92 is: 343.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.28 : 830.28 = 228.92 : x
  2. Step 2: Convert to fraction form
    553.28/830.28 = 228.92/x
  3. Step 3: Cross multiply
    553.28x = 830.28 × 228.92
  4. Step 4: Simplify right side
    553.28x = 190,067.70
  5. Step 5: Solve for x
    x = 190,067.70/553.28
  6. Step 6: Final answer
    x = 343.53

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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.