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Finding the Fourth Proportional to 557.96, 769.91 and 333.89

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Solution

The fourth proportional to 557.96, 769.91 and 333.89 is: 460.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.96 : 769.91 = 333.89 : x
  2. Step 2: Convert to fraction form
    557.96/769.91 = 333.89/x
  3. Step 3: Cross multiply
    557.96x = 769.91 × 333.89
  4. Step 4: Simplify right side
    557.96x = 257,065.25
  5. Step 5: Solve for x
    x = 257,065.25/557.96
  6. Step 6: Final answer
    x = 460.72

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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.