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Finding the Fourth Proportional to 557.19, 768.96 and 336.20

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Solution

The fourth proportional to 557.19, 768.96 and 336.20 is: 463.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.19 : 768.96 = 336.20 : x
  2. Step 2: Convert to fraction form
    557.19/768.96 = 336.20/x
  3. Step 3: Cross multiply
    557.19x = 768.96 × 336.20
  4. Step 4: Simplify right side
    557.19x = 258,520.51
  5. Step 5: Solve for x
    x = 258,520.51/557.19
  6. Step 6: Final answer
    x = 463.97

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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.