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Finding the Fourth Proportional to 557.38, 769.10 and 333.34

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Solution

The fourth proportional to 557.38, 769.10 and 333.34 is: 459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.38 : 769.10 = 333.34 : x
  2. Step 2: Convert to fraction form
    557.38/769.10 = 333.34/x
  3. Step 3: Cross multiply
    557.38x = 769.10 × 333.34
  4. Step 4: Simplify right side
    557.38x = 256,371.79
  5. Step 5: Solve for x
    x = 256,371.79/557.38
  6. Step 6: Final answer
    x = 459.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.