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Finding the Fourth Proportional to 553.03, 829.74 and 228.42

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Solution

The fourth proportional to 553.03, 829.74 and 228.42 is: 342.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.03 : 829.74 = 228.42 : x
  2. Step 2: Convert to fraction form
    553.03/829.74 = 228.42/x
  3. Step 3: Cross multiply
    553.03x = 829.74 × 228.42
  4. Step 4: Simplify right side
    553.03x = 189,529.21
  5. Step 5: Solve for x
    x = 189,529.21/553.03
  6. Step 6: Final answer
    x = 342.71

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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.