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Finding the Fourth Proportional to 553.66, 828.96 and 379.96

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Solution

The fourth proportional to 553.66, 828.96 and 379.96 is: 568.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.66 : 828.96 = 379.96 : x
  2. Step 2: Convert to fraction form
    553.66/828.96 = 379.96/x
  3. Step 3: Cross multiply
    553.66x = 828.96 × 379.96
  4. Step 4: Simplify right side
    553.66x = 314,971.64
  5. Step 5: Solve for x
    x = 314,971.64/553.66
  6. Step 6: Final answer
    x = 568.89

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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.