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Finding the Fourth Proportional to 438.44, 659.99 and 336.98

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Solution

The fourth proportional to 438.44, 659.99 and 336.98 is: 507.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.44 : 659.99 = 336.98 : x
  2. Step 2: Convert to fraction form
    438.44/659.99 = 336.98/x
  3. Step 3: Cross multiply
    438.44x = 659.99 × 336.98
  4. Step 4: Simplify right side
    438.44x = 222,405.92
  5. Step 5: Solve for x
    x = 222,405.92/438.44
  6. Step 6: Final answer
    x = 507.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.