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Finding the Fourth Proportional to 553.44, 830.20 and 228.62

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Solution

The fourth proportional to 553.44, 830.20 and 228.62 is: 342.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.44 : 830.20 = 228.62 : x
  2. Step 2: Convert to fraction form
    553.44/830.20 = 228.62/x
  3. Step 3: Cross multiply
    553.44x = 830.20 × 228.62
  4. Step 4: Simplify right side
    553.44x = 189,800.32
  5. Step 5: Solve for x
    x = 189,800.32/553.44
  6. Step 6: Final answer
    x = 342.95

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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.