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Finding the Fourth Proportional to 553.23, 829.20 and 228.19

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Solution

The fourth proportional to 553.23, 829.20 and 228.19 is: 342.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.23 : 829.20 = 228.19 : x
  2. Step 2: Convert to fraction form
    553.23/829.20 = 228.19/x
  3. Step 3: Cross multiply
    553.23x = 829.20 × 228.19
  4. Step 4: Simplify right side
    553.23x = 189,215.15
  5. Step 5: Solve for x
    x = 189,215.15/553.23
  6. Step 6: Final answer
    x = 342.02

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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.