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Finding the Fourth Proportional to 263.34, 396.58 and 239.98

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Solution

The fourth proportional to 263.34, 396.58 and 239.98 is: 361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.34 : 396.58 = 239.98 : x
  2. Step 2: Convert to fraction form
    263.34/396.58 = 239.98/x
  3. Step 3: Cross multiply
    263.34x = 396.58 × 239.98
  4. Step 4: Simplify right side
    263.34x = 95,172.06
  5. Step 5: Solve for x
    x = 95,172.06/263.34
  6. Step 6: Final answer
    x = 361.41

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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.