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Finding the Fourth Proportional to 438.91, 604.79 and 359.98

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Solution

The fourth proportional to 438.91, 604.79 and 359.98 is: 496.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.91 : 604.79 = 359.98 : x
  2. Step 2: Convert to fraction form
    438.91/604.79 = 359.98/x
  3. Step 3: Cross multiply
    438.91x = 604.79 × 359.98
  4. Step 4: Simplify right side
    438.91x = 217,712.30
  5. Step 5: Solve for x
    x = 217,712.30/438.91
  6. Step 6: Final answer
    x = 496.03

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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.