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Finding the Fourth Proportional to 557.87, 769.85 and 336.74

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Solution

The fourth proportional to 557.87, 769.85 and 336.74 is: 464.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.87 : 769.85 = 336.74 : x
  2. Step 2: Convert to fraction form
    557.87/769.85 = 336.74/x
  3. Step 3: Cross multiply
    557.87x = 769.85 × 336.74
  4. Step 4: Simplify right side
    557.87x = 259,237.61
  5. Step 5: Solve for x
    x = 259,237.61/557.87
  6. Step 6: Final answer
    x = 464.69

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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.