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Finding the Fourth Proportional to 557.50, 769.41 and 336.56

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Solution

The fourth proportional to 557.50, 769.41 and 336.56 is: 464.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.50 : 769.41 = 336.56 : x
  2. Step 2: Convert to fraction form
    557.50/769.41 = 336.56/x
  3. Step 3: Cross multiply
    557.50x = 769.41 × 336.56
  4. Step 4: Simplify right side
    557.50x = 258,952.63
  5. Step 5: Solve for x
    x = 258,952.63/557.50
  6. Step 6: Final answer
    x = 464.49

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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.